Home / 128,042.27-191,968.29-61,418.96

Finding the Fourth Proportional to 128,042.27, 191,968.29 and 61,418.96

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Solution

The fourth proportional to 128,042.27, 191,968.29 and 61,418.96 is: 92,082.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.27 : 191,968.29 = 61,418.96 : x
  2. Step 2: Convert to fraction form
    128,042.27/191,968.29 = 61,418.96/x
  3. Step 3: Cross multiply
    128,042.27x = 191,968.29 × 61,418.96
  4. Step 4: Simplify right side
    128,042.27x = 11,790,492,724.78
  5. Step 5: Solve for x
    x = 11,790,492,724.78/128,042.27
  6. Step 6: Final answer
    x = 92,082.82

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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.