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Finding the Fourth Proportional to 125,478.86, 173,154.92 and 68,116.91

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Solution

The fourth proportional to 125,478.86, 173,154.92 and 68,116.91 is: 93,998.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,478.86 : 173,154.92 = 68,116.91 : x
  2. Step 2: Convert to fraction form
    125,478.86/173,154.92 = 68,116.91/x
  3. Step 3: Cross multiply
    125,478.86x = 173,154.92 × 68,116.91
  4. Step 4: Simplify right side
    125,478.86x = 11,794,776,895.34
  5. Step 5: Solve for x
    x = 11,794,776,895.34/125,478.86
  6. Step 6: Final answer
    x = 93,998.12

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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.