Home / 132,781.86-183,243.60-72,357.48

Finding the Fourth Proportional to 132,781.86, 183,243.60 and 72,357.48

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Solution

The fourth proportional to 132,781.86, 183,243.60 and 72,357.48 is: 99,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,781.86 : 183,243.60 = 72,357.48 : x
  2. Step 2: Convert to fraction form
    132,781.86/183,243.60 = 72,357.48/x
  3. Step 3: Cross multiply
    132,781.86x = 183,243.60 × 72,357.48
  4. Step 4: Simplify right side
    132,781.86x = 13,259,045,122.13
  5. Step 5: Solve for x
    x = 13,259,045,122.13/132,781.86
  6. Step 6: Final answer
    x = 99,855.85

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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.