Home / 120,155.07-180,244.94-45,338.18

Finding the Fourth Proportional to 120,155.07, 180,244.94 and 45,338.18

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Solution

The fourth proportional to 120,155.07, 180,244.94 and 45,338.18 is: 68,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,155.07 : 180,244.94 = 45,338.18 : x
  2. Step 2: Convert to fraction form
    120,155.07/180,244.94 = 45,338.18/x
  3. Step 3: Cross multiply
    120,155.07x = 180,244.94 × 45,338.18
  4. Step 4: Simplify right side
    120,155.07x = 8,171,976,405.89
  5. Step 5: Solve for x
    x = 8,171,976,405.89/120,155.07
  6. Step 6: Final answer
    x = 68,011.91

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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.