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Finding the Fourth Proportional to 129,841.60, 194,704.80 and 59,742.40

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Solution

The fourth proportional to 129,841.60, 194,704.80 and 59,742.40 is: 89,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,841.60 : 194,704.80 = 59,742.40 : x
  2. Step 2: Convert to fraction form
    129,841.60/194,704.80 = 59,742.40/x
  3. Step 3: Cross multiply
    129,841.60x = 194,704.80 × 59,742.40
  4. Step 4: Simplify right side
    129,841.60x = 11,632,132,043.52
  5. Step 5: Solve for x
    x = 11,632,132,043.52/129,841.60
  6. Step 6: Final answer
    x = 89,587.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.