Home / 151,732.35-209,359.38-87,189.12

Finding the Fourth Proportional to 151,732.35, 209,359.38 and 87,189.12

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Solution

The fourth proportional to 151,732.35, 209,359.38 and 87,189.12 is: 120,303.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,732.35 : 209,359.38 = 87,189.12 : x
  2. Step 2: Convert to fraction form
    151,732.35/209,359.38 = 87,189.12/x
  3. Step 3: Cross multiply
    151,732.35x = 209,359.38 × 87,189.12
  4. Step 4: Simplify right side
    151,732.35x = 18,253,859,126.59
  5. Step 5: Solve for x
    x = 18,253,859,126.59/151,732.35
  6. Step 6: Final answer
    x = 120,303.02

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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.