Home / 120,319.18-180,656.17-67,115.10

Finding the Fourth Proportional to 120,319.18, 180,656.17 and 67,115.10

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Solution

The fourth proportional to 120,319.18, 180,656.17 and 67,115.10 is: 100,771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,319.18 : 180,656.17 = 67,115.10 : x
  2. Step 2: Convert to fraction form
    120,319.18/180,656.17 = 67,115.10/x
  3. Step 3: Cross multiply
    120,319.18x = 180,656.17 × 67,115.10
  4. Step 4: Simplify right side
    120,319.18x = 12,124,756,915.17
  5. Step 5: Solve for x
    x = 12,124,756,915.17/120,319.18
  6. Step 6: Final answer
    x = 100,771.61

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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.