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Finding the Fourth Proportional to 131,649.62, 181,675.71 and 71,220.08

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Solution

The fourth proportional to 131,649.62, 181,675.71 and 71,220.08 is: 98,283.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,649.62 : 181,675.71 = 71,220.08 : x
  2. Step 2: Convert to fraction form
    131,649.62/181,675.71 = 71,220.08/x
  3. Step 3: Cross multiply
    131,649.62x = 181,675.71 × 71,220.08
  4. Step 4: Simplify right side
    131,649.62x = 12,938,957,691.88
  5. Step 5: Solve for x
    x = 12,938,957,691.88/131,649.62
  6. Step 6: Final answer
    x = 98,283.29

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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.