Home / 120,072.47-180,113.57-45,184.73

Finding the Fourth Proportional to 120,072.47, 180,113.57 and 45,184.73

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Solution

The fourth proportional to 120,072.47, 180,113.57 and 45,184.73 is: 67,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,072.47 : 180,113.57 = 45,184.73 : x
  2. Step 2: Convert to fraction form
    120,072.47/180,113.57 = 45,184.73/x
  3. Step 3: Cross multiply
    120,072.47x = 180,113.57 × 45,184.73
  4. Step 4: Simplify right side
    120,072.47x = 8,138,382,803.86
  5. Step 5: Solve for x
    x = 8,138,382,803.86/120,072.47
  6. Step 6: Final answer
    x = 67,778.92

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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.