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Finding the Fourth Proportional to 125,404.71, 173,063.49 and 68,818.11

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Solution

The fourth proportional to 125,404.71, 173,063.49 and 68,818.11 is: 94,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,404.71 : 173,063.49 = 68,818.11 : x
  2. Step 2: Convert to fraction form
    125,404.71/173,063.49 = 68,818.11/x
  3. Step 3: Cross multiply
    125,404.71x = 173,063.49 × 68,818.11
  4. Step 4: Simplify right side
    125,404.71x = 11,909,901,082.40
  5. Step 5: Solve for x
    x = 11,909,901,082.40/125,404.71
  6. Step 6: Final answer
    x = 94,971.72

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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.