Home / 86,105.20-129,031.44-61,193.20

Finding the Fourth Proportional to 86,105.20, 129,031.44 and 61,193.20

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Solution

The fourth proportional to 86,105.20, 129,031.44 and 61,193.20 is: 91,700.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,105.20 : 129,031.44 = 61,193.20 : x
  2. Step 2: Convert to fraction form
    86,105.20/129,031.44 = 61,193.20/x
  3. Step 3: Cross multiply
    86,105.20x = 129,031.44 × 61,193.20
  4. Step 4: Simplify right side
    86,105.20x = 7,895,846,714.21
  5. Step 5: Solve for x
    x = 7,895,846,714.21/86,105.20
  6. Step 6: Final answer
    x = 91,700.00

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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.