Home / 131,721.03-181,773.45-71,290.24

Finding the Fourth Proportional to 131,721.03, 181,773.45 and 71,290.24

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Solution

The fourth proportional to 131,721.03, 181,773.45 and 71,290.24 is: 98,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,721.03 : 181,773.45 = 71,290.24 : x
  2. Step 2: Convert to fraction form
    131,721.03/181,773.45 = 71,290.24/x
  3. Step 3: Cross multiply
    131,721.03x = 181,773.45 × 71,290.24
  4. Step 4: Simplify right side
    131,721.03x = 12,958,672,421.69
  5. Step 5: Solve for x
    x = 12,958,672,421.69/131,721.03
  6. Step 6: Final answer
    x = 98,379.68

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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.