Home / 151,759.45-209,431.11-83,776.15

Finding the Fourth Proportional to 151,759.45, 209,431.11 and 83,776.15

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Solution

The fourth proportional to 151,759.45, 209,431.11 and 83,776.15 is: 115,612.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,759.45 : 209,431.11 = 83,776.15 : x
  2. Step 2: Convert to fraction form
    151,759.45/209,431.11 = 83,776.15/x
  3. Step 3: Cross multiply
    151,759.45x = 209,431.11 × 83,776.15
  4. Step 4: Simplify right side
    151,759.45x = 17,545,332,400.16
  5. Step 5: Solve for x
    x = 17,545,332,400.16/151,759.45
  6. Step 6: Final answer
    x = 115,612.78

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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.