Home / 138,996.79-208,416.20-54,711.27

Finding the Fourth Proportional to 138,996.79, 208,416.20 and 54,711.27

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Solution

The fourth proportional to 138,996.79, 208,416.20 and 54,711.27 is: 82,035.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,996.79 : 208,416.20 = 54,711.27 : x
  2. Step 2: Convert to fraction form
    138,996.79/208,416.20 = 54,711.27/x
  3. Step 3: Cross multiply
    138,996.79x = 208,416.20 × 54,711.27
  4. Step 4: Simplify right side
    138,996.79x = 11,402,714,717.02
  5. Step 5: Solve for x
    x = 11,402,714,717.02/138,996.79
  6. Step 6: Final answer
    x = 82,035.81

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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.