Home / 113,711.08-156,919.38-62,728.78

Finding the Fourth Proportional to 113,711.08, 156,919.38 and 62,728.78

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Solution

The fourth proportional to 113,711.08, 156,919.38 and 62,728.78 is: 86,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,711.08 : 156,919.38 = 62,728.78 : x
  2. Step 2: Convert to fraction form
    113,711.08/156,919.38 = 62,728.78/x
  3. Step 3: Cross multiply
    113,711.08x = 156,919.38 × 62,728.78
  4. Step 4: Simplify right side
    113,711.08x = 9,843,361,265.76
  5. Step 5: Solve for x
    x = 9,843,361,265.76/113,711.08
  6. Step 6: Final answer
    x = 86,564.66

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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.