Home / 124,902.47-172,361.12-71,204.78

Finding the Fourth Proportional to 124,902.47, 172,361.12 and 71,204.78

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Solution

The fourth proportional to 124,902.47, 172,361.12 and 71,204.78 is: 98,260.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,902.47 : 172,361.12 = 71,204.78 : x
  2. Step 2: Convert to fraction form
    124,902.47/172,361.12 = 71,204.78/x
  3. Step 3: Cross multiply
    124,902.47x = 172,361.12 × 71,204.78
  4. Step 4: Simplify right side
    124,902.47x = 12,272,935,705.03
  5. Step 5: Solve for x
    x = 12,272,935,705.03/124,902.47
  6. Step 6: Final answer
    x = 98,260.15

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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.