Home / 129,473,453.70-194,210,180.55-81,100,512.90

Finding the Fourth Proportional to 129,473,453.70, 194,210,180.55 and 81,100,512.90

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Solution

The fourth proportional to 129,473,453.70, 194,210,180.55 and 81,100,512.90 is: 121,650,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,473,453.70 : 194,210,180.55 = 81,100,512.90 : x
  2. Step 2: Convert to fraction form
    129,473,453.70/194,210,180.55 = 81,100,512.90/x
  3. Step 3: Cross multiply
    129,473,453.70x = 194,210,180.55 × 81,100,512.90
  4. Step 4: Simplify right side
    129,473,453.70x = 15,750,545,253,006,606
  5. Step 5: Solve for x
    x = 15,750,545,253,006,606/129,473,453.70
  6. Step 6: Final answer
    x = 121,650,769.35

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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.