Home / 151,631.20-209,249.20-83,651

Finding the Fourth Proportional to 151,631.20, 209,249.20 and 83,651

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Solution

The fourth proportional to 151,631.20, 209,249.20 and 83,651 is: 115,437.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,631.20 : 209,249.20 = 83,651 : x
  2. Step 2: Convert to fraction form
    151,631.20/209,249.20 = 83,651/x
  3. Step 3: Cross multiply
    151,631.20x = 209,249.20 × 83,651
  4. Step 4: Simplify right side
    151,631.20x = 17,503,904,829.20
  5. Step 5: Solve for x
    x = 17,503,904,829.20/151,631.20
  6. Step 6: Final answer
    x = 115,437.36

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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.