Home / 129,813.57-179,159.18-75,354.12

Finding the Fourth Proportional to 129,813.57, 179,159.18 and 75,354.12

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Solution

The fourth proportional to 129,813.57, 179,159.18 and 75,354.12 is: 103,998.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,813.57 : 179,159.18 = 75,354.12 : x
  2. Step 2: Convert to fraction form
    129,813.57/179,159.18 = 75,354.12/x
  3. Step 3: Cross multiply
    129,813.57x = 179,159.18 × 75,354.12
  4. Step 4: Simplify right side
    129,813.57x = 13,500,381,972.05
  5. Step 5: Solve for x
    x = 13,500,381,972.05/129,813.57
  6. Step 6: Final answer
    x = 103,998.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.