Home / 129,579,819.60-194,369,729.40-83,663,317.20

Finding the Fourth Proportional to 129,579,819.60, 194,369,729.40 and 83,663,317.20

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Solution

The fourth proportional to 129,579,819.60, 194,369,729.40 and 83,663,317.20 is: 125,494,975.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,579,819.60 : 194,369,729.40 = 83,663,317.20 : x
  2. Step 2: Convert to fraction form
    129,579,819.60/194,369,729.40 = 83,663,317.20/x
  3. Step 3: Cross multiply
    129,579,819.60x = 194,369,729.40 × 83,663,317.20
  4. Step 4: Simplify right side
    129,579,819.60x = 16,261,616,324,870,366
  5. Step 5: Solve for x
    x = 16,261,616,324,870,366/129,579,819.60
  6. Step 6: Final answer
    x = 125,494,975.80

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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.