Home / 91,576.17-126,251.04-78,290.14

Finding the Fourth Proportional to 91,576.17, 126,251.04 and 78,290.14

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Solution

The fourth proportional to 91,576.17, 126,251.04 and 78,290.14 is: 107,934.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,576.17 : 126,251.04 = 78,290.14 : x
  2. Step 2: Convert to fraction form
    91,576.17/126,251.04 = 78,290.14/x
  3. Step 3: Cross multiply
    91,576.17x = 126,251.04 × 78,290.14
  4. Step 4: Simplify right side
    91,576.17x = 9,884,211,596.75
  5. Step 5: Solve for x
    x = 9,884,211,596.75/91,576.17
  6. Step 6: Final answer
    x = 107,934.33

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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.