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Finding the Fourth Proportional to 100,681.60, 150,892.80 and 61,196.80

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Solution

The fourth proportional to 100,681.60, 150,892.80 and 61,196.80 is: 91,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,681.60 : 150,892.80 = 61,196.80 : x
  2. Step 2: Convert to fraction form
    100,681.60/150,892.80 = 61,196.80/x
  3. Step 3: Cross multiply
    100,681.60x = 150,892.80 × 61,196.80
  4. Step 4: Simplify right side
    100,681.60x = 9,234,156,503.04
  5. Step 5: Solve for x
    x = 9,234,156,503.04/100,681.60
  6. Step 6: Final answer
    x = 91,716.43

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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.