Home / 91,826.60-137,739.90-76,080.20

Finding the Fourth Proportional to 91,826.60, 137,739.90 and 76,080.20

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Solution

The fourth proportional to 91,826.60, 137,739.90 and 76,080.20 is: 114,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,826.60 : 137,739.90 = 76,080.20 : x
  2. Step 2: Convert to fraction form
    91,826.60/137,739.90 = 76,080.20/x
  3. Step 3: Cross multiply
    91,826.60x = 137,739.90 × 76,080.20
  4. Step 4: Simplify right side
    91,826.60x = 10,479,279,139.98
  5. Step 5: Solve for x
    x = 10,479,279,139.98/91,826.60
  6. Step 6: Final answer
    x = 114,120.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.