Home / 158,729.17-219,048.90-87,115.87

Finding the Fourth Proportional to 158,729.17, 219,048.90 and 87,115.87

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Solution

The fourth proportional to 158,729.17, 219,048.90 and 87,115.87 is: 120,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,729.17 : 219,048.90 = 87,115.87 : x
  2. Step 2: Convert to fraction form
    158,729.17/219,048.90 = 87,115.87/x
  3. Step 3: Cross multiply
    158,729.17x = 219,048.90 × 87,115.87
  4. Step 4: Simplify right side
    158,729.17x = 19,082,635,496.04
  5. Step 5: Solve for x
    x = 19,082,635,496.04/158,729.17
  6. Step 6: Final answer
    x = 120,221.35

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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.