Home / 138,905.53-191,689.44-75,243.58

Finding the Fourth Proportional to 138,905.53, 191,689.44 and 75,243.58

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Solution

The fourth proportional to 138,905.53, 191,689.44 and 75,243.58 is: 103,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,905.53 : 191,689.44 = 75,243.58 : x
  2. Step 2: Convert to fraction form
    138,905.53/191,689.44 = 75,243.58/x
  3. Step 3: Cross multiply
    138,905.53x = 191,689.44 × 75,243.58
  4. Step 4: Simplify right side
    138,905.53x = 14,423,399,713.80
  5. Step 5: Solve for x
    x = 14,423,399,713.80/138,905.53
  6. Step 6: Final answer
    x = 103,836.04

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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.