Home / 123,398.92-170,261.24-71,685.25

Finding the Fourth Proportional to 123,398.92, 170,261.24 and 71,685.25

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Solution

The fourth proportional to 123,398.92, 170,261.24 and 71,685.25 is: 98,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,398.92 : 170,261.24 = 71,685.25 : x
  2. Step 2: Convert to fraction form
    123,398.92/170,261.24 = 71,685.25/x
  3. Step 3: Cross multiply
    123,398.92x = 170,261.24 × 71,685.25
  4. Step 4: Simplify right side
    123,398.92x = 12,205,220,131.58
  5. Step 5: Solve for x
    x = 12,205,220,131.58/123,398.92
  6. Step 6: Final answer
    x = 98,908.65

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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.