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Finding the Fourth Proportional to 159,817.70, 239,726.55 and 100,720.10

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Solution

The fourth proportional to 159,817.70, 239,726.55 and 100,720.10 is: 151,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,817.70 : 239,726.55 = 100,720.10 : x
  2. Step 2: Convert to fraction form
    159,817.70/239,726.55 = 100,720.10/x
  3. Step 3: Cross multiply
    159,817.70x = 239,726.55 × 100,720.10
  4. Step 4: Simplify right side
    159,817.70x = 24,145,282,088.66
  5. Step 5: Solve for x
    x = 24,145,282,088.66/159,817.70
  6. Step 6: Final answer
    x = 151,080.15

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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.