Home / 128,042.02-191,967.92-61,418.71

Finding the Fourth Proportional to 128,042.02, 191,967.92 and 61,418.71

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Solution

The fourth proportional to 128,042.02, 191,967.92 and 61,418.71 is: 92,082.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.02 : 191,967.92 = 61,418.71 : x
  2. Step 2: Convert to fraction form
    128,042.02/191,967.92 = 61,418.71/x
  3. Step 3: Cross multiply
    128,042.02x = 191,967.92 × 61,418.71
  4. Step 4: Simplify right side
    128,042.02x = 11,790,421,700.69
  5. Step 5: Solve for x
    x = 11,790,421,700.69/128,042.02
  6. Step 6: Final answer
    x = 92,082.44

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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.