Home / 137,211.76-206,162.16-87,313.60

Finding the Fourth Proportional to 137,211.76, 206,162.16 and 87,313.60

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Solution

The fourth proportional to 137,211.76, 206,162.16 and 87,313.60 is: 131,189.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,211.76 : 206,162.16 = 87,313.60 : x
  2. Step 2: Convert to fraction form
    137,211.76/206,162.16 = 87,313.60/x
  3. Step 3: Cross multiply
    137,211.76x = 206,162.16 × 87,313.60
  4. Step 4: Simplify right side
    137,211.76x = 18,000,760,373.38
  5. Step 5: Solve for x
    x = 18,000,760,373.38/137,211.76
  6. Step 6: Final answer
    x = 131,189.63

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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.