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Finding the Fourth Proportional to 138,673.24, 207,987.98 and 49,881.04

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Solution

The fourth proportional to 138,673.24, 207,987.98 and 49,881.04 is: 74,813.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673.24 : 207,987.98 = 49,881.04 : x
  2. Step 2: Convert to fraction form
    138,673.24/207,987.98 = 49,881.04/x
  3. Step 3: Cross multiply
    138,673.24x = 207,987.98 × 49,881.04
  4. Step 4: Simplify right side
    138,673.24x = 10,374,655,980.52
  5. Step 5: Solve for x
    x = 10,374,655,980.52/138,673.24
  6. Step 6: Final answer
    x = 74,813.69

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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.