Home / 138,997.24-208,416.86-54,711.74

Finding the Fourth Proportional to 138,997.24, 208,416.86 and 54,711.74

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Solution

The fourth proportional to 138,997.24, 208,416.86 and 54,711.74 is: 82,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997.24 : 208,416.86 = 54,711.74 : x
  2. Step 2: Convert to fraction form
    138,997.24/208,416.86 = 54,711.74/x
  3. Step 3: Cross multiply
    138,997.24x = 208,416.86 × 54,711.74
  4. Step 4: Simplify right side
    138,997.24x = 11,402,848,013.85
  5. Step 5: Solve for x
    x = 11,402,848,013.85/138,997.24
  6. Step 6: Final answer
    x = 82,036.51

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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.