Home / 151,395.02-208,930.11-83,414.78

Finding the Fourth Proportional to 151,395.02, 208,930.11 and 83,414.78

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Solution

The fourth proportional to 151,395.02, 208,930.11 and 83,414.78 is: 115,115.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,395.02 : 208,930.11 = 83,414.78 : x
  2. Step 2: Convert to fraction form
    151,395.02/208,930.11 = 83,414.78/x
  3. Step 3: Cross multiply
    151,395.02x = 208,930.11 × 83,414.78
  4. Step 4: Simplify right side
    151,395.02x = 17,427,859,161.03
  5. Step 5: Solve for x
    x = 17,427,859,161.03/151,395.02
  6. Step 6: Final answer
    x = 115,115.14

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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.