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Finding the Fourth Proportional to 143,804,581.78, 215,706,872.67 and 99,801,266.98

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Solution

The fourth proportional to 143,804,581.78, 215,706,872.67 and 99,801,266.98 is: 149,701,900.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,804,581.78 : 215,706,872.67 = 99,801,266.98 : x
  2. Step 2: Convert to fraction form
    143,804,581.78/215,706,872.67 = 99,801,266.98/x
  3. Step 3: Cross multiply
    143,804,581.78x = 215,706,872.67 × 99,801,266.98
  4. Step 4: Simplify right side
    143,804,581.78x = 21,527,819,188,759,536
  5. Step 5: Solve for x
    x = 21,527,819,188,759,536/143,804,581.78
  6. Step 6: Final answer
    x = 149,701,900.47

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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.