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Finding the Fourth Proportional to 159,801.60, 239,788.80 and 71,068.80

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Solution

The fourth proportional to 159,801.60, 239,788.80 and 71,068.80 is: 106,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,801.60 : 239,788.80 = 71,068.80 : x
  2. Step 2: Convert to fraction form
    159,801.60/239,788.80 = 71,068.80/x
  3. Step 3: Cross multiply
    159,801.60x = 239,788.80 × 71,068.80
  4. Step 4: Simplify right side
    159,801.60x = 17,041,502,269.44
  5. Step 5: Solve for x
    x = 17,041,502,269.44/159,801.60
  6. Step 6: Final answer
    x = 106,641.62

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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.