Home / 75,434.20-113,151.30-66,977.80

Finding the Fourth Proportional to 75,434.20, 113,151.30 and 66,977.80

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Solution

The fourth proportional to 75,434.20, 113,151.30 and 66,977.80 is: 100,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,434.20 : 113,151.30 = 66,977.80 : x
  2. Step 2: Convert to fraction form
    75,434.20/113,151.30 = 66,977.80/x
  3. Step 3: Cross multiply
    75,434.20x = 113,151.30 × 66,977.80
  4. Step 4: Simplify right side
    75,434.20x = 7,578,625,141.14
  5. Step 5: Solve for x
    x = 7,578,625,141.14/75,434.20
  6. Step 6: Final answer
    x = 100,466.70

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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.