Home / 123,584.51-170,489.26-72,580.70

Finding the Fourth Proportional to 123,584.51, 170,489.26 and 72,580.70

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Solution

The fourth proportional to 123,584.51, 170,489.26 and 72,580.70 is: 100,127.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,584.51 : 170,489.26 = 72,580.70 : x
  2. Step 2: Convert to fraction form
    123,584.51/170,489.26 = 72,580.70/x
  3. Step 3: Cross multiply
    123,584.51x = 170,489.26 × 72,580.70
  4. Step 4: Simplify right side
    123,584.51x = 12,374,229,833.28
  5. Step 5: Solve for x
    x = 12,374,229,833.28/123,584.51
  6. Step 6: Final answer
    x = 100,127.68

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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.