Home / 125,285.74-172,906.83-71,578.81

Finding the Fourth Proportional to 125,285.74, 172,906.83 and 71,578.81

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Solution

The fourth proportional to 125,285.74, 172,906.83 and 71,578.81 is: 98,785.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,285.74 : 172,906.83 = 71,578.81 : x
  2. Step 2: Convert to fraction form
    125,285.74/172,906.83 = 71,578.81/x
  3. Step 3: Cross multiply
    125,285.74x = 172,906.83 × 71,578.81
  4. Step 4: Simplify right side
    125,285.74x = 12,376,465,132.27
  5. Step 5: Solve for x
    x = 12,376,465,132.27/125,285.74
  6. Step 6: Final answer
    x = 98,785.90

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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.