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Finding the Fourth Proportional to 121,901.52, 182,815.01 and 42,997.30

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Solution

The fourth proportional to 121,901.52, 182,815.01 and 42,997.30 is: 64,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,901.52 : 182,815.01 = 42,997.30 : x
  2. Step 2: Convert to fraction form
    121,901.52/182,815.01 = 42,997.30/x
  3. Step 3: Cross multiply
    121,901.52x = 182,815.01 × 42,997.30
  4. Step 4: Simplify right side
    121,901.52x = 7,860,551,318.69
  5. Step 5: Solve for x
    x = 7,860,551,318.69/121,901.52
  6. Step 6: Final answer
    x = 64,482.80

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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.