Home / 86,146.06-129,219.30-26,986.90

Finding the Fourth Proportional to 86,146.06, 129,219.30 and 26,986.90

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Solution

The fourth proportional to 86,146.06, 129,219.30 and 26,986.90 is: 40,480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,146.06 : 129,219.30 = 26,986.90 : x
  2. Step 2: Convert to fraction form
    86,146.06/129,219.30 = 26,986.90/x
  3. Step 3: Cross multiply
    86,146.06x = 129,219.30 × 26,986.90
  4. Step 4: Simplify right side
    86,146.06x = 3,487,228,327.17
  5. Step 5: Solve for x
    x = 3,487,228,327.17/86,146.06
  6. Step 6: Final answer
    x = 40,480.42

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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.