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Finding the Fourth Proportional to 172,652,164.70, 258,936,775.05 and 99,711,211.10

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Solution

The fourth proportional to 172,652,164.70, 258,936,775.05 and 99,711,211.10 is: 149,542,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,652,164.70 : 258,936,775.05 = 99,711,211.10 : x
  2. Step 2: Convert to fraction form
    172,652,164.70/258,936,775.05 = 99,711,211.10/x
  3. Step 3: Cross multiply
    172,652,164.70x = 258,936,775.05 × 99,711,211.10
  4. Step 4: Simplify right side
    172,652,164.70x = 25,818,899,438,563,764
  5. Step 5: Solve for x
    x = 25,818,899,438,563,764/172,652,164.70
  6. Step 6: Final answer
    x = 149,542,865.47

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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.