Home / 131,931.20-181,918.56-101,648.96

Finding the Fourth Proportional to 131,931.20, 181,918.56 and 101,648.96

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Solution

The fourth proportional to 131,931.20, 181,918.56 and 101,648.96 is: 140,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,931.20 : 181,918.56 = 101,648.96 : x
  2. Step 2: Convert to fraction form
    131,931.20/181,918.56 = 101,648.96/x
  3. Step 3: Cross multiply
    131,931.20x = 181,918.56 × 101,648.96
  4. Step 4: Simplify right side
    131,931.20x = 18,491,832,428.70
  5. Step 5: Solve for x
    x = 18,491,832,428.70/131,931.20
  6. Step 6: Final answer
    x = 140,162.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.