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Finding the Fourth Proportional to 131,493.89, 181,462.40 and 71,064.39

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Solution

The fourth proportional to 131,493.89, 181,462.40 and 71,064.39 is: 98,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,493.89 : 181,462.40 = 71,064.39 : x
  2. Step 2: Convert to fraction form
    131,493.89/181,462.40 = 71,064.39/x
  3. Step 3: Cross multiply
    131,493.89x = 181,462.40 × 71,064.39
  4. Step 4: Simplify right side
    131,493.89x = 12,895,513,797.95
  5. Step 5: Solve for x
    x = 12,895,513,797.95/131,493.89
  6. Step 6: Final answer
    x = 98,069.30

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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.