Home / 158,939.18-219,335.15-87,317.66

Finding the Fourth Proportional to 158,939.18, 219,335.15 and 87,317.66

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Solution

The fourth proportional to 158,939.18, 219,335.15 and 87,317.66 is: 120,497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,939.18 : 219,335.15 = 87,317.66 : x
  2. Step 2: Convert to fraction form
    158,939.18/219,335.15 = 87,317.66/x
  3. Step 3: Cross multiply
    158,939.18x = 219,335.15 × 87,317.66
  4. Step 4: Simplify right side
    158,939.18x = 19,151,832,053.75
  5. Step 5: Solve for x
    x = 19,151,832,053.75/158,939.18
  6. Step 6: Final answer
    x = 120,497.87

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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.