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Finding the Fourth Proportional to 125,988.91, 173,864.72 and 69,400.29

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Solution

The fourth proportional to 125,988.91, 173,864.72 and 69,400.29 is: 95,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,988.91 : 173,864.72 = 69,400.29 : x
  2. Step 2: Convert to fraction form
    125,988.91/173,864.72 = 69,400.29/x
  3. Step 3: Cross multiply
    125,988.91x = 173,864.72 × 69,400.29
  4. Step 4: Simplify right side
    125,988.91x = 12,066,261,988.77
  5. Step 5: Solve for x
    x = 12,066,261,988.77/125,988.91
  6. Step 6: Final answer
    x = 95,772.41

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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.