Home / 131,904,111.80-197,764,007.70-78,023,689.40

Finding the Fourth Proportional to 131,904,111.80, 197,764,007.70 and 78,023,689.40

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Solution

The fourth proportional to 131,904,111.80, 197,764,007.70 and 78,023,689.40 is: 116,981,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,904,111.80 : 197,764,007.70 = 78,023,689.40 : x
  2. Step 2: Convert to fraction form
    131,904,111.80/197,764,007.70 = 78,023,689.40/x
  3. Step 3: Cross multiply
    131,904,111.80x = 197,764,007.70 × 78,023,689.40
  4. Step 4: Simplify right side
    131,904,111.80x = 15,430,277,511,284,008
  5. Step 5: Solve for x
    x = 15,430,277,511,284,008/131,904,111.80
  6. Step 6: Final answer
    x = 116,981,019.78

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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.