Home / 136,851.72-205,248.24-79,887.68

Finding the Fourth Proportional to 136,851.72, 205,248.24 and 79,887.68

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Solution

The fourth proportional to 136,851.72, 205,248.24 and 79,887.68 is: 119,814.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,851.72 : 205,248.24 = 79,887.68 : x
  2. Step 2: Convert to fraction form
    136,851.72/205,248.24 = 79,887.68/x
  3. Step 3: Cross multiply
    136,851.72x = 205,248.24 × 79,887.68
  4. Step 4: Simplify right side
    136,851.72x = 16,396,805,717.68
  5. Step 5: Solve for x
    x = 16,396,805,717.68/136,851.72
  6. Step 6: Final answer
    x = 119,814.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.