Home / 91,520.19-126,232.76-83,990.84

Finding the Fourth Proportional to 91,520.19, 126,232.76 and 83,990.84

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Solution

The fourth proportional to 91,520.19, 126,232.76 and 83,990.84 is: 115,847.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,520.19 : 126,232.76 = 83,990.84 : x
  2. Step 2: Convert to fraction form
    91,520.19/126,232.76 = 83,990.84/x
  3. Step 3: Cross multiply
    91,520.19x = 126,232.76 × 83,990.84
  4. Step 4: Simplify right side
    91,520.19x = 10,602,395,126.73
  5. Step 5: Solve for x
    x = 10,602,395,126.73/91,520.19
  6. Step 6: Final answer
    x = 115,847.61

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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.