Home / 121,631.62-182,372.91-42,754.90

Finding the Fourth Proportional to 121,631.62, 182,372.91 and 42,754.90

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Solution

The fourth proportional to 121,631.62, 182,372.91 and 42,754.90 is: 64,106.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,631.62 : 182,372.91 = 42,754.90 : x
  2. Step 2: Convert to fraction form
    121,631.62/182,372.91 = 42,754.90/x
  3. Step 3: Cross multiply
    121,631.62x = 182,372.91 × 42,754.90
  4. Step 4: Simplify right side
    121,631.62x = 7,797,335,529.76
  5. Step 5: Solve for x
    x = 7,797,335,529.76/121,631.62
  6. Step 6: Final answer
    x = 64,106.16

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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.