Home / 120,178.15-180,140.10-45,265.87

Finding the Fourth Proportional to 120,178.15, 180,140.10 and 45,265.87

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Solution

The fourth proportional to 120,178.15, 180,140.10 and 45,265.87 is: 67,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,178.15 : 180,140.10 = 45,265.87 : x
  2. Step 2: Convert to fraction form
    120,178.15/180,140.10 = 45,265.87/x
  3. Step 3: Cross multiply
    120,178.15x = 180,140.10 × 45,265.87
  4. Step 4: Simplify right side
    120,178.15x = 8,154,198,403.82
  5. Step 5: Solve for x
    x = 8,154,198,403.82/120,178.15
  6. Step 6: Final answer
    x = 67,850.92

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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.