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Finding the Fourth Proportional to 99,694,915.20, 149,542,372.80 and 45,947,203.20

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Solution

The fourth proportional to 99,694,915.20, 149,542,372.80 and 45,947,203.20 is: 68,920,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694,915.20 : 149,542,372.80 = 45,947,203.20 : x
  2. Step 2: Convert to fraction form
    99,694,915.20/149,542,372.80 = 45,947,203.20/x
  3. Step 3: Cross multiply
    99,694,915.20x = 149,542,372.80 × 45,947,203.20
  4. Step 4: Simplify right side
    99,694,915.20x = 6,871,053,790,051,754
  5. Step 5: Solve for x
    x = 6,871,053,790,051,754/99,694,915.20
  6. Step 6: Final answer
    x = 68,920,804.80

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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.