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Finding the Fourth Proportional to 133,388.76, 199,861 and 93,862.80

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Solution

The fourth proportional to 133,388.76, 199,861 and 93,862.80 is: 140,637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,388.76 : 199,861 = 93,862.80 : x
  2. Step 2: Convert to fraction form
    133,388.76/199,861 = 93,862.80/x
  3. Step 3: Cross multiply
    133,388.76x = 199,861 × 93,862.80
  4. Step 4: Simplify right side
    133,388.76x = 18,759,513,070.80
  5. Step 5: Solve for x
    x = 18,759,513,070.80/133,388.76
  6. Step 6: Final answer
    x = 140,637.88

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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.