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Finding the Fourth Proportional to 144,979.60, 218,052.60 and 129,816.40

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Solution

The fourth proportional to 144,979.60, 218,052.60 and 129,816.40 is: 195,246.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,979.60 : 218,052.60 = 129,816.40 : x
  2. Step 2: Convert to fraction form
    144,979.60/218,052.60 = 129,816.40/x
  3. Step 3: Cross multiply
    144,979.60x = 218,052.60 × 129,816.40
  4. Step 4: Simplify right side
    144,979.60x = 28,306,803,542.64
  5. Step 5: Solve for x
    x = 28,306,803,542.64/144,979.60
  6. Step 6: Final answer
    x = 195,246.80

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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.