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Finding the Fourth Proportional to 101,376,469.80, 152,064,704.70 and 69,127,842.60

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Solution

The fourth proportional to 101,376,469.80, 152,064,704.70 and 69,127,842.60 is: 103,691,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,376,469.80 : 152,064,704.70 = 69,127,842.60 : x
  2. Step 2: Convert to fraction form
    101,376,469.80/152,064,704.70 = 69,127,842.60/x
  3. Step 3: Cross multiply
    101,376,469.80x = 152,064,704.70 × 69,127,842.60
  4. Step 4: Simplify right side
    101,376,469.80x = 10,511,904,971,517,078
  5. Step 5: Solve for x
    x = 10,511,904,971,517,078/101,376,469.80
  6. Step 6: Final answer
    x = 103,691,763.90

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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.