Home / 123,395.28-170,286.72-66,807.84

Finding the Fourth Proportional to 123,395.28, 170,286.72 and 66,807.84

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Solution

The fourth proportional to 123,395.28, 170,286.72 and 66,807.84 is: 92,195.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.28 : 170,286.72 = 66,807.84 : x
  2. Step 2: Convert to fraction form
    123,395.28/170,286.72 = 66,807.84/x
  3. Step 3: Cross multiply
    123,395.28x = 170,286.72 × 66,807.84
  4. Step 4: Simplify right side
    123,395.28x = 11,376,487,943.88
  5. Step 5: Solve for x
    x = 11,376,487,943.88/123,395.28
  6. Step 6: Final answer
    x = 92,195.49

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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.