Home / 131,691.68-181,702.90-80,007.74

Finding the Fourth Proportional to 131,691.68, 181,702.90 and 80,007.74

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Solution

The fourth proportional to 131,691.68, 181,702.90 and 80,007.74 is: 110,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,691.68 : 181,702.90 = 80,007.74 : x
  2. Step 2: Convert to fraction form
    131,691.68/181,702.90 = 80,007.74/x
  3. Step 3: Cross multiply
    131,691.68x = 181,702.90 × 80,007.74
  4. Step 4: Simplify right side
    131,691.68x = 14,537,638,634.68
  5. Step 5: Solve for x
    x = 14,537,638,634.68/131,691.68
  6. Step 6: Final answer
    x = 110,391.47

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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.