Home / 203,856,618.70-305,784,928.05-127,415,428.30

Finding the Fourth Proportional to 203,856,618.70, 305,784,928.05 and 127,415,428.30

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Solution

The fourth proportional to 203,856,618.70, 305,784,928.05 and 127,415,428.30 is: 191,123,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,856,618.70 : 305,784,928.05 = 127,415,428.30 : x
  2. Step 2: Convert to fraction form
    203,856,618.70/305,784,928.05 = 127,415,428.30/x
  3. Step 3: Cross multiply
    203,856,618.70x = 305,784,928.05 × 127,415,428.30
  4. Step 4: Simplify right side
    203,856,618.70x = 38,961,717,575,175,432
  5. Step 5: Solve for x
    x = 38,961,717,575,175,432/203,856,618.70
  6. Step 6: Final answer
    x = 191,123,142.45

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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.