Home / 260,072.71-390,221.75-91,713.33

Finding the Fourth Proportional to 260,072.71, 390,221.75 and 91,713.33

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Solution

The fourth proportional to 260,072.71, 390,221.75 and 91,713.33 is: 137,609.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,072.71 : 390,221.75 = 91,713.33 : x
  2. Step 2: Convert to fraction form
    260,072.71/390,221.75 = 91,713.33/x
  3. Step 3: Cross multiply
    260,072.71x = 390,221.75 × 91,713.33
  4. Step 4: Simplify right side
    260,072.71x = 35,788,536,360.21
  5. Step 5: Solve for x
    x = 35,788,536,360.21/260,072.71
  6. Step 6: Final answer
    x = 137,609.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.