Home / 129,899.66-194,951.54-66,717.23

Finding the Fourth Proportional to 129,899.66, 194,951.54 and 66,717.23

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Solution

The fourth proportional to 129,899.66, 194,951.54 and 66,717.23 is: 100,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.66 : 194,951.54 = 66,717.23 : x
  2. Step 2: Convert to fraction form
    129,899.66/194,951.54 = 66,717.23/x
  3. Step 3: Cross multiply
    129,899.66x = 194,951.54 × 66,717.23
  4. Step 4: Simplify right side
    129,899.66x = 13,006,625,925.07
  5. Step 5: Solve for x
    x = 13,006,625,925.07/129,899.66
  6. Step 6: Final answer
    x = 100,128.26

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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.