Home / 151,431.15-208,972.17-83,454.42

Finding the Fourth Proportional to 151,431.15, 208,972.17 and 83,454.42

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Solution

The fourth proportional to 151,431.15, 208,972.17 and 83,454.42 is: 115,165.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,431.15 : 208,972.17 = 83,454.42 : x
  2. Step 2: Convert to fraction form
    151,431.15/208,972.17 = 83,454.42/x
  3. Step 3: Cross multiply
    151,431.15x = 208,972.17 × 83,454.42
  4. Step 4: Simplify right side
    151,431.15x = 17,439,651,243.49
  5. Step 5: Solve for x
    x = 17,439,651,243.49/151,431.15
  6. Step 6: Final answer
    x = 115,165.55

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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.