Home / 120,491.55-166,275.78-66,776.10

Finding the Fourth Proportional to 120,491.55, 166,275.78 and 66,776.10

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Solution

The fourth proportional to 120,491.55, 166,275.78 and 66,776.10 is: 92,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,491.55 : 166,275.78 = 66,776.10 : x
  2. Step 2: Convert to fraction form
    120,491.55/166,275.78 = 66,776.10/x
  3. Step 3: Cross multiply
    120,491.55x = 166,275.78 × 66,776.10
  4. Step 4: Simplify right side
    120,491.55x = 11,103,247,489.32
  5. Step 5: Solve for x
    x = 11,103,247,489.32/120,491.55
  6. Step 6: Final answer
    x = 92,149.59

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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.