Home / 142,758.18-197,014.26-81,522.45

Finding the Fourth Proportional to 142,758.18, 197,014.26 and 81,522.45

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Solution

The fourth proportional to 142,758.18, 197,014.26 and 81,522.45 is: 112,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,758.18 : 197,014.26 = 81,522.45 : x
  2. Step 2: Convert to fraction form
    142,758.18/197,014.26 = 81,522.45/x
  3. Step 3: Cross multiply
    142,758.18x = 197,014.26 × 81,522.45
  4. Step 4: Simplify right side
    142,758.18x = 16,061,085,160.14
  5. Step 5: Solve for x
    x = 16,061,085,160.14/142,758.18
  6. Step 6: Final answer
    x = 112,505.53

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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.