Home / 86,129.11-129,193.87-26,158.13

Finding the Fourth Proportional to 86,129.11, 129,193.87 and 26,158.13

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Solution

The fourth proportional to 86,129.11, 129,193.87 and 26,158.13 is: 39,237.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,129.11 : 129,193.87 = 26,158.13 : x
  2. Step 2: Convert to fraction form
    86,129.11/129,193.87 = 26,158.13/x
  3. Step 3: Cross multiply
    86,129.11x = 129,193.87 × 26,158.13
  4. Step 4: Simplify right side
    86,129.11x = 3,379,470,046.66
  5. Step 5: Solve for x
    x = 3,379,470,046.66/86,129.11
  6. Step 6: Final answer
    x = 39,237.26

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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.