Home / 129,587,905.20-194,605,806.60-69,121,729.20

Finding the Fourth Proportional to 129,587,905.20, 194,605,806.60 and 69,121,729.20

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Solution

The fourth proportional to 129,587,905.20, 194,605,806.60 and 69,121,729.20 is: 103,802,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,587,905.20 : 194,605,806.60 = 69,121,729.20 : x
  2. Step 2: Convert to fraction form
    129,587,905.20/194,605,806.60 = 69,121,729.20/x
  3. Step 3: Cross multiply
    129,587,905.20x = 194,605,806.60 × 69,121,729.20
  4. Step 4: Simplify right side
    129,587,905.20x = 13,451,489,864,552,772
  5. Step 5: Solve for x
    x = 13,451,489,864,552,772/129,587,905.20
  6. Step 6: Final answer
    x = 103,802,047.30

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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.