Home / 123,781.32-170,818.36-67,192.68

Finding the Fourth Proportional to 123,781.32, 170,818.36 and 67,192.68

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Solution

The fourth proportional to 123,781.32, 170,818.36 and 67,192.68 is: 92,725.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,781.32 : 170,818.36 = 67,192.68 : x
  2. Step 2: Convert to fraction form
    123,781.32/170,818.36 = 67,192.68/x
  3. Step 3: Cross multiply
    123,781.32x = 170,818.36 × 67,192.68
  4. Step 4: Simplify right side
    123,781.32x = 11,477,743,401.60
  5. Step 5: Solve for x
    x = 11,477,743,401.60/123,781.32
  6. Step 6: Final answer
    x = 92,725.97

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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.