Home / 120,501.68-180,574.85-67,120.11

Finding the Fourth Proportional to 120,501.68, 180,574.85 and 67,120.11

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Solution

The fourth proportional to 120,501.68, 180,574.85 and 67,120.11 is: 100,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,501.68 : 180,574.85 = 67,120.11 : x
  2. Step 2: Convert to fraction form
    120,501.68/180,574.85 = 67,120.11/x
  3. Step 3: Cross multiply
    120,501.68x = 180,574.85 × 67,120.11
  4. Step 4: Simplify right side
    120,501.68x = 12,120,203,963.03
  5. Step 5: Solve for x
    x = 12,120,203,963.03/120,501.68
  6. Step 6: Final answer
    x = 100,581.21

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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.