Home / 143,752,780.89-198,474,612.15-85,034,307.67

Finding the Fourth Proportional to 143,752,780.89, 198,474,612.15 and 85,034,307.67

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Solution

The fourth proportional to 143,752,780.89, 198,474,612.15 and 85,034,307.67 is: 117,403,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,752,780.89 : 198,474,612.15 = 85,034,307.67 : x
  2. Step 2: Convert to fraction form
    143,752,780.89/198,474,612.15 = 85,034,307.67/x
  3. Step 3: Cross multiply
    143,752,780.89x = 198,474,612.15 × 85,034,307.67
  4. Step 4: Simplify right side
    143,752,780.89x = 16,877,151,234,069,714
  5. Step 5: Solve for x
    x = 16,877,151,234,069,714/143,752,780.89
  6. Step 6: Final answer
    x = 117,403,998.24

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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.