Home / 91,517.09-126,534.57-80,154.01

Finding the Fourth Proportional to 91,517.09, 126,534.57 and 80,154.01

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Solution

The fourth proportional to 91,517.09, 126,534.57 and 80,154.01 is: 110,823.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,517.09 : 126,534.57 = 80,154.01 : x
  2. Step 2: Convert to fraction form
    91,517.09/126,534.57 = 80,154.01/x
  3. Step 3: Cross multiply
    91,517.09x = 126,534.57 × 80,154.01
  4. Step 4: Simplify right side
    91,517.09x = 10,142,252,872.79
  5. Step 5: Solve for x
    x = 10,142,252,872.79/91,517.09
  6. Step 6: Final answer
    x = 110,823.59

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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.