Home / 142,760.19-197,017.02-81,524.46

Finding the Fourth Proportional to 142,760.19, 197,017.02 and 81,524.46

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Solution

The fourth proportional to 142,760.19, 197,017.02 and 81,524.46 is: 112,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,760.19 : 197,017.02 = 81,524.46 : x
  2. Step 2: Convert to fraction form
    142,760.19/197,017.02 = 81,524.46/x
  3. Step 3: Cross multiply
    142,760.19x = 197,017.02 × 81,524.46
  4. Step 4: Simplify right side
    142,760.19x = 16,061,706,166.31
  5. Step 5: Solve for x
    x = 16,061,706,166.31/142,760.19
  6. Step 6: Final answer
    x = 112,508.30

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Half scale
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Double scale
Find fourth proportional to 142,761.19, 197,018.40 and 81,525.46
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.