Home / 131,817.22-181,906.80-71,386.47

Finding the Fourth Proportional to 131,817.22, 181,906.80 and 71,386.47

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Solution

The fourth proportional to 131,817.22, 181,906.80 and 71,386.47 is: 98,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,817.22 : 181,906.80 = 71,386.47 : x
  2. Step 2: Convert to fraction form
    131,817.22/181,906.80 = 71,386.47/x
  3. Step 3: Cross multiply
    131,817.22x = 181,906.80 × 71,386.47
  4. Step 4: Simplify right side
    131,817.22x = 12,985,684,321.00
  5. Step 5: Solve for x
    x = 12,985,684,321.00/131,817.22
  6. Step 6: Final answer
    x = 98,512.81

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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.