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Finding the Fourth Proportional to 129,304.16, 178,442.16 and 75,593.76

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Solution

The fourth proportional to 129,304.16, 178,442.16 and 75,593.76 is: 104,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,304.16 : 178,442.16 = 75,593.76 : x
  2. Step 2: Convert to fraction form
    129,304.16/178,442.16 = 75,593.76/x
  3. Step 3: Cross multiply
    129,304.16x = 178,442.16 × 75,593.76
  4. Step 4: Simplify right side
    129,304.16x = 13,489,113,816.92
  5. Step 5: Solve for x
    x = 13,489,113,816.92/129,304.16
  6. Step 6: Final answer
    x = 104,320.80

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1.5x scale

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.