Home / 91,274.16-126,238.32-81,839.28

Finding the Fourth Proportional to 91,274.16, 126,238.32 and 81,839.28

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Solution

The fourth proportional to 91,274.16, 126,238.32 and 81,839.28 is: 113,189.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,274.16 : 126,238.32 = 81,839.28 : x
  2. Step 2: Convert to fraction form
    91,274.16/126,238.32 = 81,839.28/x
  3. Step 3: Cross multiply
    91,274.16x = 126,238.32 × 81,839.28
  4. Step 4: Simplify right side
    91,274.16x = 10,331,253,217.21
  5. Step 5: Solve for x
    x = 10,331,253,217.21/91,274.16
  6. Step 6: Final answer
    x = 113,189.24

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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.