Home / 141,730.92-212,064.06-86,764.20

Finding the Fourth Proportional to 141,730.92, 212,064.06 and 86,764.20

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Solution

The fourth proportional to 141,730.92, 212,064.06 and 86,764.20 is: 129,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,730.92 : 212,064.06 = 86,764.20 : x
  2. Step 2: Convert to fraction form
    141,730.92/212,064.06 = 86,764.20/x
  3. Step 3: Cross multiply
    141,730.92x = 212,064.06 × 86,764.20
  4. Step 4: Simplify right side
    141,730.92x = 18,399,568,514.65
  5. Step 5: Solve for x
    x = 18,399,568,514.65/141,730.92
  6. Step 6: Final answer
    x = 129,820.43

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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.