Home / 138,726.30-208,089.45-49,982.70

Finding the Fourth Proportional to 138,726.30, 208,089.45 and 49,982.70

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Solution

The fourth proportional to 138,726.30, 208,089.45 and 49,982.70 is: 74,974.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726.30 : 208,089.45 = 49,982.70 : x
  2. Step 2: Convert to fraction form
    138,726.30/208,089.45 = 49,982.70/x
  3. Step 3: Cross multiply
    138,726.30x = 208,089.45 × 49,982.70
  4. Step 4: Simplify right side
    138,726.30x = 10,400,872,552.52
  5. Step 5: Solve for x
    x = 10,400,872,552.52/138,726.30
  6. Step 6: Final answer
    x = 74,974.05

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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.