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Finding the Fourth Proportional to 91,892.80, 137,839.20 and 73,460.80

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Solution

The fourth proportional to 91,892.80, 137,839.20 and 73,460.80 is: 110,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,892.80 : 137,839.20 = 73,460.80 : x
  2. Step 2: Convert to fraction form
    91,892.80/137,839.20 = 73,460.80/x
  3. Step 3: Cross multiply
    91,892.80x = 137,839.20 × 73,460.80
  4. Step 4: Simplify right side
    91,892.80x = 10,125,777,903.36
  5. Step 5: Solve for x
    x = 10,125,777,903.36/91,892.80
  6. Step 6: Final answer
    x = 110,191.20

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1.5x scale

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.