Home / 155,866.28-215,167.08-91,326.56

Finding the Fourth Proportional to 155,866.28, 215,167.08 and 91,326.56

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Solution

The fourth proportional to 155,866.28, 215,167.08 and 91,326.56 is: 126,072.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,866.28 : 215,167.08 = 91,326.56 : x
  2. Step 2: Convert to fraction form
    155,866.28/215,167.08 = 91,326.56/x
  3. Step 3: Cross multiply
    155,866.28x = 215,167.08 × 91,326.56
  4. Step 4: Simplify right side
    155,866.28x = 19,650,469,241.64
  5. Step 5: Solve for x
    x = 19,650,469,241.64/155,866.28
  6. Step 6: Final answer
    x = 126,072.61

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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.