Home / 98,004.48-135,123.84-81,079.04

Finding the Fourth Proportional to 98,004.48, 135,123.84 and 81,079.04

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Solution

The fourth proportional to 98,004.48, 135,123.84 and 81,079.04 is: 111,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,004.48 : 135,123.84 = 81,079.04 : x
  2. Step 2: Convert to fraction form
    98,004.48/135,123.84 = 81,079.04/x
  3. Step 3: Cross multiply
    98,004.48x = 135,123.84 × 81,079.04
  4. Step 4: Simplify right side
    98,004.48x = 10,955,711,228.31
  5. Step 5: Solve for x
    x = 10,955,711,228.31/98,004.48
  6. Step 6: Final answer
    x = 111,787.86

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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.