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Finding the Fourth Proportional to 121,882.02, 182,892.90 and 65,721.90

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Solution

The fourth proportional to 121,882.02, 182,892.90 and 65,721.90 is: 98,620.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,882.02 : 182,892.90 = 65,721.90 : x
  2. Step 2: Convert to fraction form
    121,882.02/182,892.90 = 65,721.90/x
  3. Step 3: Cross multiply
    121,882.02x = 182,892.90 × 65,721.90
  4. Step 4: Simplify right side
    121,882.02x = 12,020,068,884.51
  5. Step 5: Solve for x
    x = 12,020,068,884.51/121,882.02
  6. Step 6: Final answer
    x = 98,620.53

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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.