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Finding the Fourth Proportional to 159,699.60, 239,549.40 and 89,569.80

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Solution

The fourth proportional to 159,699.60, 239,549.40 and 89,569.80 is: 134,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,699.60 : 239,549.40 = 89,569.80 : x
  2. Step 2: Convert to fraction form
    159,699.60/239,549.40 = 89,569.80/x
  3. Step 3: Cross multiply
    159,699.60x = 239,549.40 × 89,569.80
  4. Step 4: Simplify right side
    159,699.60x = 21,456,391,848.12
  5. Step 5: Solve for x
    x = 21,456,391,848.12/159,699.60
  6. Step 6: Final answer
    x = 134,354.70

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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.