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Finding the Fourth Proportional to 121,633.62, 182,375.90 and 42,756.90

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Solution

The fourth proportional to 121,633.62, 182,375.90 and 42,756.90 is: 64,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,633.62 : 182,375.90 = 42,756.90 : x
  2. Step 2: Convert to fraction form
    121,633.62/182,375.90 = 42,756.90/x
  3. Step 3: Cross multiply
    121,633.62x = 182,375.90 × 42,756.90
  4. Step 4: Simplify right side
    121,633.62x = 7,797,828,118.71
  5. Step 5: Solve for x
    x = 7,797,828,118.71/121,633.62
  6. Step 6: Final answer
    x = 64,109.15

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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.