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Finding the Fourth Proportional to 145,372.59, 218,056.15 and 79,233.61

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Solution

The fourth proportional to 145,372.59, 218,056.15 and 79,233.61 is: 118,848.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,372.59 : 218,056.15 = 79,233.61 : x
  2. Step 2: Convert to fraction form
    145,372.59/218,056.15 = 79,233.61/x
  3. Step 3: Cross multiply
    145,372.59x = 218,056.15 × 79,233.61
  4. Step 4: Simplify right side
    145,372.59x = 17,277,375,947.20
  5. Step 5: Solve for x
    x = 17,277,375,947.20/145,372.59
  6. Step 6: Final answer
    x = 118,848.92

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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.