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Finding the Fourth Proportional to 125,345.42, 172,948.69 and 74,332.22

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Solution

The fourth proportional to 125,345.42, 172,948.69 and 74,332.22 is: 102,561.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,345.42 : 172,948.69 = 74,332.22 : x
  2. Step 2: Convert to fraction form
    125,345.42/172,948.69 = 74,332.22/x
  3. Step 3: Cross multiply
    125,345.42x = 172,948.69 × 74,332.22
  4. Step 4: Simplify right side
    125,345.42x = 12,855,660,320.33
  5. Step 5: Solve for x
    x = 12,855,660,320.33/125,345.42
  6. Step 6: Final answer
    x = 102,561.87

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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.