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Finding the Fourth Proportional to 151,167.66, 208,618.38 and 87,493.20

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Solution

The fourth proportional to 151,167.66, 208,618.38 and 87,493.20 is: 120,744.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,167.66 : 208,618.38 = 87,493.20 : x
  2. Step 2: Convert to fraction form
    151,167.66/208,618.38 = 87,493.20/x
  3. Step 3: Cross multiply
    151,167.66x = 208,618.38 × 87,493.20
  4. Step 4: Simplify right side
    151,167.66x = 18,252,689,645.02
  5. Step 5: Solve for x
    x = 18,252,689,645.02/151,167.66
  6. Step 6: Final answer
    x = 120,744.67

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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.