Home / 124,959.48-172,439.78-71,261.78

Finding the Fourth Proportional to 124,959.48, 172,439.78 and 71,261.78

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Solution

The fourth proportional to 124,959.48, 172,439.78 and 71,261.78 is: 98,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,959.48 : 172,439.78 = 71,261.78 : x
  2. Step 2: Convert to fraction form
    124,959.48/172,439.78 = 71,261.78/x
  3. Step 3: Cross multiply
    124,959.48x = 172,439.78 × 71,261.78
  4. Step 4: Simplify right side
    124,959.48x = 12,288,365,665.61
  5. Step 5: Solve for x
    x = 12,288,365,665.61/124,959.48
  6. Step 6: Final answer
    x = 98,338.80

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1.5x scale

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.