Home / 129,433.50-193,887.78-66,972.78

Finding the Fourth Proportional to 129,433.50, 193,887.78 and 66,972.78

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Solution

The fourth proportional to 129,433.50, 193,887.78 and 66,972.78 is: 100,323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.50 : 193,887.78 = 66,972.78 : x
  2. Step 2: Convert to fraction form
    129,433.50/193,887.78 = 66,972.78/x
  3. Step 3: Cross multiply
    129,433.50x = 193,887.78 × 66,972.78
  4. Step 4: Simplify right side
    129,433.50x = 12,985,203,634.63
  5. Step 5: Solve for x
    x = 12,985,203,634.63/129,433.50
  6. Step 6: Final answer
    x = 100,323.36

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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.