Home / 260,126.91-390,302.96-91,767.60

Finding the Fourth Proportional to 260,126.91, 390,302.96 and 91,767.60

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Solution

The fourth proportional to 260,126.91, 390,302.96 and 91,767.60 is: 137,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,126.91 : 390,302.96 = 91,767.60 : x
  2. Step 2: Convert to fraction form
    260,126.91/390,302.96 = 91,767.60/x
  3. Step 3: Cross multiply
    260,126.91x = 390,302.96 × 91,767.60
  4. Step 4: Simplify right side
    260,126.91x = 35,817,165,453.26
  5. Step 5: Solve for x
    x = 35,817,165,453.26/260,126.91
  6. Step 6: Final answer
    x = 137,691.12

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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.