Home / 80,111.03-120,156.10-20,951.26

Finding the Fourth Proportional to 80,111.03, 120,156.10 and 20,951.26

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Solution

The fourth proportional to 80,111.03, 120,156.10 and 20,951.26 is: 31,424.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,111.03 : 120,156.10 = 20,951.26 : x
  2. Step 2: Convert to fraction form
    80,111.03/120,156.10 = 20,951.26/x
  3. Step 3: Cross multiply
    80,111.03x = 120,156.10 × 20,951.26
  4. Step 4: Simplify right side
    80,111.03x = 2,517,421,338.92
  5. Step 5: Solve for x
    x = 2,517,421,338.92/80,111.03
  6. Step 6: Final answer
    x = 31,424.16

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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.