Home / 143,982,045.50-198,695,219.70-77,902,543.78

Finding the Fourth Proportional to 143,982,045.50, 198,695,219.70 and 77,902,543.78

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Solution

The fourth proportional to 143,982,045.50, 198,695,219.70 and 77,902,543.78 is: 107,505,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,982,045.50 : 198,695,219.70 = 77,902,543.78 : x
  2. Step 2: Convert to fraction form
    143,982,045.50/198,695,219.70 = 77,902,543.78/x
  3. Step 3: Cross multiply
    143,982,045.50x = 198,695,219.70 × 77,902,543.78
  4. Step 4: Simplify right side
    143,982,045.50x = 15,478,863,050,172,980
  5. Step 5: Solve for x
    x = 15,478,863,050,172,980/143,982,045.50
  6. Step 6: Final answer
    x = 107,505,508.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.