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Finding the Fourth Proportional to 159,810.60, 239,715.90 and 89,680.80

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Solution

The fourth proportional to 159,810.60, 239,715.90 and 89,680.80 is: 134,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,810.60 : 239,715.90 = 89,680.80 : x
  2. Step 2: Convert to fraction form
    159,810.60/239,715.90 = 89,680.80/x
  3. Step 3: Cross multiply
    159,810.60x = 239,715.90 × 89,680.80
  4. Step 4: Simplify right side
    159,810.60x = 21,497,913,684.72
  5. Step 5: Solve for x
    x = 21,497,913,684.72/159,810.60
  6. Step 6: Final answer
    x = 134,521.20

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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.