Home / 91,265.78-136,903.51-28,129.27

Finding the Fourth Proportional to 91,265.78, 136,903.51 and 28,129.27

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Solution

The fourth proportional to 91,265.78, 136,903.51 and 28,129.27 is: 42,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,265.78 : 136,903.51 = 28,129.27 : x
  2. Step 2: Convert to fraction form
    91,265.78/136,903.51 = 28,129.27/x
  3. Step 3: Cross multiply
    91,265.78x = 136,903.51 × 28,129.27
  4. Step 4: Simplify right side
    91,265.78x = 3,850,995,796.74
  5. Step 5: Solve for x
    x = 3,850,995,796.74/91,265.78
  6. Step 6: Final answer
    x = 42,195.40

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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.