Home / 159,308.32-219,851.34-87,691.36

Finding the Fourth Proportional to 159,308.32, 219,851.34 and 87,691.36

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Solution

The fourth proportional to 159,308.32, 219,851.34 and 87,691.36 is: 121,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,308.32 : 219,851.34 = 87,691.36 : x
  2. Step 2: Convert to fraction form
    159,308.32/219,851.34 = 87,691.36/x
  3. Step 3: Cross multiply
    159,308.32x = 219,851.34 × 87,691.36
  4. Step 4: Simplify right side
    159,308.32x = 19,279,063,002.42
  5. Step 5: Solve for x
    x = 19,279,063,002.42/159,308.32
  6. Step 6: Final answer
    x = 121,017.30

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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.