Home / 120,375.86-166,063.57-77,948.06

Finding the Fourth Proportional to 120,375.86, 166,063.57 and 77,948.06

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Solution

The fourth proportional to 120,375.86, 166,063.57 and 77,948.06 is: 107,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,375.86 : 166,063.57 = 77,948.06 : x
  2. Step 2: Convert to fraction form
    120,375.86/166,063.57 = 77,948.06/x
  3. Step 3: Cross multiply
    120,375.86x = 166,063.57 × 77,948.06
  4. Step 4: Simplify right side
    120,375.86x = 12,944,332,092.99
  5. Step 5: Solve for x
    x = 12,944,332,092.99/120,375.86
  6. Step 6: Final answer
    x = 107,532.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.