Home / 123,275.28-170,119.80-66,686.70

Finding the Fourth Proportional to 123,275.28, 170,119.80 and 66,686.70

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Solution

The fourth proportional to 123,275.28, 170,119.80 and 66,686.70 is: 92,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,275.28 : 170,119.80 = 66,686.70 : x
  2. Step 2: Convert to fraction form
    123,275.28/170,119.80 = 66,686.70/x
  3. Step 3: Cross multiply
    123,275.28x = 170,119.80 × 66,686.70
  4. Step 4: Simplify right side
    123,275.28x = 11,344,728,066.66
  5. Step 5: Solve for x
    x = 11,344,728,066.66/123,275.28
  6. Step 6: Final answer
    x = 92,027.60

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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.