Home / 123,388.38-170,276.78-66,799.76

Finding the Fourth Proportional to 123,388.38, 170,276.78 and 66,799.76

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Solution

The fourth proportional to 123,388.38, 170,276.78 and 66,799.76 is: 92,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,388.38 : 170,276.78 = 66,799.76 : x
  2. Step 2: Convert to fraction form
    123,388.38/170,276.78 = 66,799.76/x
  3. Step 3: Cross multiply
    123,388.38x = 170,276.78 × 66,799.76
  4. Step 4: Simplify right side
    123,388.38x = 11,374,447,353.19
  5. Step 5: Solve for x
    x = 11,374,447,353.19/123,388.38
  6. Step 6: Final answer
    x = 92,184.10

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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.