Home / 91,331.04-136,996.80-28,149.12

Finding the Fourth Proportional to 91,331.04, 136,996.80 and 28,149.12

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Solution

The fourth proportional to 91,331.04, 136,996.80 and 28,149.12 is: 42,223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,331.04 : 136,996.80 = 28,149.12 : x
  2. Step 2: Convert to fraction form
    91,331.04/136,996.80 = 28,149.12/x
  3. Step 3: Cross multiply
    91,331.04x = 136,996.80 × 28,149.12
  4. Step 4: Simplify right side
    91,331.04x = 3,856,339,362.82
  5. Step 5: Solve for x
    x = 3,856,339,362.82/91,331.04
  6. Step 6: Final answer
    x = 42,223.75

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1.5x scale

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.