Home / 129,823.20-194,734.80-66,837.60

Finding the Fourth Proportional to 129,823.20, 194,734.80 and 66,837.60

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Solution

The fourth proportional to 129,823.20, 194,734.80 and 66,837.60 is: 100,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,823.20 : 194,734.80 = 66,837.60 : x
  2. Step 2: Convert to fraction form
    129,823.20/194,734.80 = 66,837.60/x
  3. Step 3: Cross multiply
    129,823.20x = 194,734.80 × 66,837.60
  4. Step 4: Simplify right side
    129,823.20x = 13,015,606,668.48
  5. Step 5: Solve for x
    x = 13,015,606,668.48/129,823.20
  6. Step 6: Final answer
    x = 100,256.40

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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.