Home / 138,117.12-190,616.42-80,773.98

Finding the Fourth Proportional to 138,117.12, 190,616.42 and 80,773.98

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Solution

The fourth proportional to 138,117.12, 190,616.42 and 80,773.98 is: 111,476.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,117.12 : 190,616.42 = 80,773.98 : x
  2. Step 2: Convert to fraction form
    138,117.12/190,616.42 = 80,773.98/x
  3. Step 3: Cross multiply
    138,117.12x = 190,616.42 × 80,773.98
  4. Step 4: Simplify right side
    138,117.12x = 15,396,846,896.75
  5. Step 5: Solve for x
    x = 15,396,846,896.75/138,117.12
  6. Step 6: Final answer
    x = 111,476.74

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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.