Home / 86,422.10-129,827.55-83,117.30

Finding the Fourth Proportional to 86,422.10, 129,827.55 and 83,117.30

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Solution

The fourth proportional to 86,422.10, 129,827.55 and 83,117.30 is: 124,862.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,422.10 : 129,827.55 = 83,117.30 : x
  2. Step 2: Convert to fraction form
    86,422.10/129,827.55 = 83,117.30/x
  3. Step 3: Cross multiply
    86,422.10x = 129,827.55 × 83,117.30
  4. Step 4: Simplify right side
    86,422.10x = 10,790,915,421.62
  5. Step 5: Solve for x
    x = 10,790,915,421.62/86,422.10
  6. Step 6: Final answer
    x = 124,862.92

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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.