Home / 100,031.93-149,834.04-80,974.25

Finding the Fourth Proportional to 100,031.93, 149,834.04 and 80,974.25

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Solution

The fourth proportional to 100,031.93, 149,834.04 and 80,974.25 is: 121,288.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,031.93 : 149,834.04 = 80,974.25 : x
  2. Step 2: Convert to fraction form
    100,031.93/149,834.04 = 80,974.25/x
  3. Step 3: Cross multiply
    100,031.93x = 149,834.04 × 80,974.25
  4. Step 4: Simplify right side
    100,031.93x = 12,132,698,522.52
  5. Step 5: Solve for x
    x = 12,132,698,522.52/100,031.93
  6. Step 6: Final answer
    x = 121,288.26

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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.