Home / 124,728.95-172,125.65-68,140.73

Finding the Fourth Proportional to 124,728.95, 172,125.65 and 68,140.73

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Solution

The fourth proportional to 124,728.95, 172,125.65 and 68,140.73 is: 94,034.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.95 : 172,125.65 = 68,140.73 : x
  2. Step 2: Convert to fraction form
    124,728.95/172,125.65 = 68,140.73/x
  3. Step 3: Cross multiply
    124,728.95x = 172,125.65 × 68,140.73
  4. Step 4: Simplify right side
    124,728.95x = 11,728,766,241.39
  5. Step 5: Solve for x
    x = 11,728,766,241.39/124,728.95
  6. Step 6: Final answer
    x = 94,034.04

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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.