Home / 203,487,140.70-305,230,711.05-126,003,042.90

Finding the Fourth Proportional to 203,487,140.70, 305,230,711.05 and 126,003,042.90

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Solution

The fourth proportional to 203,487,140.70, 305,230,711.05 and 126,003,042.90 is: 189,004,564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,487,140.70 : 305,230,711.05 = 126,003,042.90 : x
  2. Step 2: Convert to fraction form
    203,487,140.70/305,230,711.05 = 126,003,042.90/x
  3. Step 3: Cross multiply
    203,487,140.70x = 305,230,711.05 × 126,003,042.90
  4. Step 4: Simplify right side
    203,487,140.70x = 38,459,998,378,830,656
  5. Step 5: Solve for x
    x = 38,459,998,378,830,656/203,487,140.70
  6. Step 6: Final answer
    x = 189,004,564.35

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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.