Home / 80,113.32-120,177-20,948.76

Finding the Fourth Proportional to 80,113.32, 120,177 and 20,948.76

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Solution

The fourth proportional to 80,113.32, 120,177 and 20,948.76 is: 31,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,113.32 : 120,177 = 20,948.76 : x
  2. Step 2: Convert to fraction form
    80,113.32/120,177 = 20,948.76/x
  3. Step 3: Cross multiply
    80,113.32x = 120,177 × 20,948.76
  4. Step 4: Simplify right side
    80,113.32x = 2,517,559,130.52
  5. Step 5: Solve for x
    x = 2,517,559,130.52/80,113.32
  6. Step 6: Final answer
    x = 31,424.98

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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.