Home / 120,882.81-181,318.68-42,003.21

Finding the Fourth Proportional to 120,882.81, 181,318.68 and 42,003.21

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Solution

The fourth proportional to 120,882.81, 181,318.68 and 42,003.21 is: 63,002.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,882.81 : 181,318.68 = 42,003.21 : x
  2. Step 2: Convert to fraction form
    120,882.81/181,318.68 = 42,003.21/x
  3. Step 3: Cross multiply
    120,882.81x = 181,318.68 × 42,003.21
  4. Step 4: Simplify right side
    120,882.81x = 7,615,966,592.96
  5. Step 5: Solve for x
    x = 7,615,966,592.96/120,882.81
  6. Step 6: Final answer
    x = 63,002.89

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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.