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Finding the Fourth Proportional to 143,804,576.78, 215,706,865.17 and 99,801,261.98

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Solution

The fourth proportional to 143,804,576.78, 215,706,865.17 and 99,801,261.98 is: 149,701,892.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,804,576.78 : 215,706,865.17 = 99,801,261.98 : x
  2. Step 2: Convert to fraction form
    143,804,576.78/215,706,865.17 = 99,801,261.98/x
  3. Step 3: Cross multiply
    143,804,576.78x = 215,706,865.17 × 99,801,261.98
  4. Step 4: Simplify right side
    143,804,576.78x = 21,527,817,361,715,708
  5. Step 5: Solve for x
    x = 21,527,817,361,715,708/143,804,576.78
  6. Step 6: Final answer
    x = 149,701,892.97

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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.