Home / 155,439.75-214,514.70-91,776.18

Finding the Fourth Proportional to 155,439.75, 214,514.70 and 91,776.18

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Solution

The fourth proportional to 155,439.75, 214,514.70 and 91,776.18 is: 126,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,439.75 : 214,514.70 = 91,776.18 : x
  2. Step 2: Convert to fraction form
    155,439.75/214,514.70 = 91,776.18/x
  3. Step 3: Cross multiply
    155,439.75x = 214,514.70 × 91,776.18
  4. Step 4: Simplify right side
    155,439.75x = 19,687,339,719.85
  5. Step 5: Solve for x
    x = 19,687,339,719.85/155,439.75
  6. Step 6: Final answer
    x = 126,655.76

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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.