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Finding the Fourth Proportional to 125,240.79, 172,834.40 and 67,881.93

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Solution

The fourth proportional to 125,240.79, 172,834.40 and 67,881.93 is: 93,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,240.79 : 172,834.40 = 67,881.93 : x
  2. Step 2: Convert to fraction form
    125,240.79/172,834.40 = 67,881.93/x
  3. Step 3: Cross multiply
    125,240.79x = 172,834.40 × 67,881.93
  4. Step 4: Simplify right side
    125,240.79x = 11,732,332,302.98
  5. Step 5: Solve for x
    x = 11,732,332,302.98/125,240.79
  6. Step 6: Final answer
    x = 93,678.20

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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.