Home / 147,781.31-203,938.45-84,119.12

Finding the Fourth Proportional to 147,781.31, 203,938.45 and 84,119.12

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Solution

The fourth proportional to 147,781.31, 203,938.45 and 84,119.12 is: 116,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,781.31 : 203,938.45 = 84,119.12 : x
  2. Step 2: Convert to fraction form
    147,781.31/203,938.45 = 84,119.12/x
  3. Step 3: Cross multiply
    147,781.31x = 203,938.45 × 84,119.12
  4. Step 4: Simplify right side
    147,781.31x = 17,155,121,718.17
  5. Step 5: Solve for x
    x = 17,155,121,718.17/147,781.31
  6. Step 6: Final answer
    x = 116,084.51

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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.