Home / 199,392,023.80-299,088,035.70-78,227,428.60

Finding the Fourth Proportional to 199,392,023.80, 299,088,035.70 and 78,227,428.60

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Solution

The fourth proportional to 199,392,023.80, 299,088,035.70 and 78,227,428.60 is: 117,341,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,392,023.80 : 299,088,035.70 = 78,227,428.60 : x
  2. Step 2: Convert to fraction form
    199,392,023.80/299,088,035.70 = 78,227,428.60/x
  3. Step 3: Cross multiply
    199,392,023.80x = 299,088,035.70 × 78,227,428.60
  4. Step 4: Simplify right side
    199,392,023.80x = 23,396,887,957,836,000
  5. Step 5: Solve for x
    x = 23,396,887,957,836,000/199,392,023.80
  6. Step 6: Final answer
    x = 117,341,142.90

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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.