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Finding the Fourth Proportional to 129,020.80, 193,531.20 and 59,036.80

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Solution

The fourth proportional to 129,020.80, 193,531.20 and 59,036.80 is: 88,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,020.80 : 193,531.20 = 59,036.80 : x
  2. Step 2: Convert to fraction form
    129,020.80/193,531.20 = 59,036.80/x
  3. Step 3: Cross multiply
    129,020.80x = 193,531.20 × 59,036.80
  4. Step 4: Simplify right side
    129,020.80x = 11,425,462,748.16
  5. Step 5: Solve for x
    x = 11,425,462,748.16/129,020.80
  6. Step 6: Final answer
    x = 88,555.20

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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.