Home / 151,961.29-209,700.68-87,451.30

Finding the Fourth Proportional to 151,961.29, 209,700.68 and 87,451.30

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Solution

The fourth proportional to 151,961.29, 209,700.68 and 87,451.30 is: 120,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,961.29 : 209,700.68 = 87,451.30 : x
  2. Step 2: Convert to fraction form
    151,961.29/209,700.68 = 87,451.30/x
  3. Step 3: Cross multiply
    151,961.29x = 209,700.68 × 87,451.30
  4. Step 4: Simplify right side
    151,961.29x = 18,338,597,606.48
  5. Step 5: Solve for x
    x = 18,338,597,606.48/151,961.29
  6. Step 6: Final answer
    x = 120,679.40

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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.