Home / 86,959.85-119,105.45-81,853.21

Finding the Fourth Proportional to 86,959.85, 119,105.45 and 81,853.21

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Solution

The fourth proportional to 86,959.85, 119,105.45 and 81,853.21 is: 112,111.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,959.85 : 119,105.45 = 81,853.21 : x
  2. Step 2: Convert to fraction form
    86,959.85/119,105.45 = 81,853.21/x
  3. Step 3: Cross multiply
    86,959.85x = 119,105.45 × 81,853.21
  4. Step 4: Simplify right side
    86,959.85x = 9,749,162,406.20
  5. Step 5: Solve for x
    x = 9,749,162,406.20/86,959.85
  6. Step 6: Final answer
    x = 112,111.08

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1.5x scale

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.