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Finding the Fourth Proportional to 124,479.76, 171,781.26 and 70,764.76

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Solution

The fourth proportional to 124,479.76, 171,781.26 and 70,764.76 is: 97,654.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,479.76 : 171,781.26 = 70,764.76 : x
  2. Step 2: Convert to fraction form
    124,479.76/171,781.26 = 70,764.76/x
  3. Step 3: Cross multiply
    124,479.76x = 171,781.26 × 70,764.76
  4. Step 4: Simplify right side
    124,479.76x = 12,156,059,636.40
  5. Step 5: Solve for x
    x = 12,156,059,636.40/124,479.76
  6. Step 6: Final answer
    x = 97,654.91

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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.