Home / 86,966.26-119,114.15-81,859.61

Finding the Fourth Proportional to 86,966.26, 119,114.15 and 81,859.61

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Solution

The fourth proportional to 86,966.26, 119,114.15 and 81,859.61 is: 112,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,966.26 : 119,114.15 = 81,859.61 : x
  2. Step 2: Convert to fraction form
    86,966.26/119,114.15 = 81,859.61/x
  3. Step 3: Cross multiply
    86,966.26x = 119,114.15 × 81,859.61
  4. Step 4: Simplify right side
    86,966.26x = 9,750,637,752.97
  5. Step 5: Solve for x
    x = 9,750,637,752.97/86,966.26
  6. Step 6: Final answer
    x = 112,119.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.