Home / 81,105.03-112,001.94-76,687.29

Finding the Fourth Proportional to 81,105.03, 112,001.94 and 76,687.29

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Solution

The fourth proportional to 81,105.03, 112,001.94 and 76,687.29 is: 105,901.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,105.03 : 112,001.94 = 76,687.29 : x
  2. Step 2: Convert to fraction form
    81,105.03/112,001.94 = 76,687.29/x
  3. Step 3: Cross multiply
    81,105.03x = 112,001.94 × 76,687.29
  4. Step 4: Simplify right side
    81,105.03x = 8,589,125,253.34
  5. Step 5: Solve for x
    x = 8,589,125,253.34/81,105.03
  6. Step 6: Final answer
    x = 105,901.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.