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Finding the Fourth Proportional to 129,304.88, 178,465.36 and 80,929.36

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Solution

The fourth proportional to 129,304.88, 178,465.36 and 80,929.36 is: 111,697.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,304.88 : 178,465.36 = 80,929.36 : x
  2. Step 2: Convert to fraction form
    129,304.88/178,465.36 = 80,929.36/x
  3. Step 3: Cross multiply
    129,304.88x = 178,465.36 × 80,929.36
  4. Step 4: Simplify right side
    129,304.88x = 14,443,087,366.97
  5. Step 5: Solve for x
    x = 14,443,087,366.97/129,304.88
  6. Step 6: Final answer
    x = 111,697.93

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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.