Home / 139,677,655.31-192,755,217.07-80,974,349.86

Finding the Fourth Proportional to 139,677,655.31, 192,755,217.07 and 80,974,349.86

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Solution

The fourth proportional to 139,677,655.31, 192,755,217.07 and 80,974,349.86 is: 111,744,633.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,677,655.31 : 192,755,217.07 = 80,974,349.86 : x
  2. Step 2: Convert to fraction form
    139,677,655.31/192,755,217.07 = 80,974,349.86/x
  3. Step 3: Cross multiply
    139,677,655.31x = 192,755,217.07 × 80,974,349.86
  4. Step 4: Simplify right side
    139,677,655.31x = 15,608,228,383,402,648
  5. Step 5: Solve for x
    x = 15,608,228,383,402,648/139,677,655.31
  6. Step 6: Final answer
    x = 111,744,633.38

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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.