Home / 143,479.68-215,279.28-76,902.72

Finding the Fourth Proportional to 143,479.68, 215,279.28 and 76,902.72

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Solution

The fourth proportional to 143,479.68, 215,279.28 and 76,902.72 is: 115,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,479.68 : 215,279.28 = 76,902.72 : x
  2. Step 2: Convert to fraction form
    143,479.68/215,279.28 = 76,902.72/x
  3. Step 3: Cross multiply
    143,479.68x = 215,279.28 × 76,902.72
  4. Step 4: Simplify right side
    143,479.68x = 16,555,562,191.64
  5. Step 5: Solve for x
    x = 16,555,562,191.64/143,479.68
  6. Step 6: Final answer
    x = 115,386.11

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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.