Home / 138,997.29-208,416.95-54,711.77

Finding the Fourth Proportional to 138,997.29, 208,416.95 and 54,711.77

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Solution

The fourth proportional to 138,997.29, 208,416.95 and 54,711.77 is: 82,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997.29 : 208,416.95 = 54,711.77 : x
  2. Step 2: Convert to fraction form
    138,997.29/208,416.95 = 54,711.77/x
  3. Step 3: Cross multiply
    138,997.29x = 208,416.95 × 54,711.77
  4. Step 4: Simplify right side
    138,997.29x = 11,402,859,958.94
  5. Step 5: Solve for x
    x = 11,402,859,958.94/138,997.29
  6. Step 6: Final answer
    x = 82,036.56

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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.