Home / 128,731.20-192,845.42-61,167.08

Finding the Fourth Proportional to 128,731.20, 192,845.42 and 61,167.08

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Solution

The fourth proportional to 128,731.20, 192,845.42 and 61,167.08 is: 91,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,731.20 : 192,845.42 = 61,167.08 : x
  2. Step 2: Convert to fraction form
    128,731.20/192,845.42 = 61,167.08/x
  3. Step 3: Cross multiply
    128,731.20x = 192,845.42 × 61,167.08
  4. Step 4: Simplify right side
    128,731.20x = 11,795,791,232.77
  5. Step 5: Solve for x
    x = 11,795,791,232.77/128,731.20
  6. Step 6: Final answer
    x = 91,631.18

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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.