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Finding the Fourth Proportional to 122,376.78, 168,932.70 and 114,716.76

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Solution

The fourth proportional to 122,376.78, 168,932.70 and 114,716.76 is: 158,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,376.78 : 168,932.70 = 114,716.76 : x
  2. Step 2: Convert to fraction form
    122,376.78/168,932.70 = 114,716.76/x
  3. Step 3: Cross multiply
    122,376.78x = 168,932.70 × 114,716.76
  4. Step 4: Simplify right side
    122,376.78x = 19,379,412,002.05
  5. Step 5: Solve for x
    x = 19,379,412,002.05/122,376.78
  6. Step 6: Final answer
    x = 158,358.57

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1.5x scale

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.