Home / 142,759.18-197,015.64-81,523.45

Finding the Fourth Proportional to 142,759.18, 197,015.64 and 81,523.45

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Solution

The fourth proportional to 142,759.18, 197,015.64 and 81,523.45 is: 112,506.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,759.18 : 197,015.64 = 81,523.45 : x
  2. Step 2: Convert to fraction form
    142,759.18/197,015.64 = 81,523.45/x
  3. Step 3: Cross multiply
    142,759.18x = 197,015.64 × 81,523.45
  4. Step 4: Simplify right side
    142,759.18x = 16,061,394,676.76
  5. Step 5: Solve for x
    x = 16,061,394,676.76/142,759.18
  6. Step 6: Final answer
    x = 112,506.91

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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.