Home / 138,721.59-208,091.70-48,753.36

Finding the Fourth Proportional to 138,721.59, 208,091.70 and 48,753.36

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Solution

The fourth proportional to 138,721.59, 208,091.70 and 48,753.36 is: 73,133.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721.59 : 208,091.70 = 48,753.36 : x
  2. Step 2: Convert to fraction form
    138,721.59/208,091.70 = 48,753.36/x
  3. Step 3: Cross multiply
    138,721.59x = 208,091.70 × 48,753.36
  4. Step 4: Simplify right side
    138,721.59x = 10,145,169,563.11
  5. Step 5: Solve for x
    x = 10,145,169,563.11/138,721.59
  6. Step 6: Final answer
    x = 73,133.31

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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.