Home / 138,587,005.38-191,236,985.01-82,821,323.58

Finding the Fourth Proportional to 138,587,005.38, 191,236,985.01 and 82,821,323.58

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Solution

The fourth proportional to 138,587,005.38, 191,236,985.01 and 82,821,323.58 is: 114,285,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,587,005.38 : 191,236,985.01 = 82,821,323.58 : x
  2. Step 2: Convert to fraction form
    138,587,005.38/191,236,985.01 = 82,821,323.58/x
  3. Step 3: Cross multiply
    138,587,005.38x = 191,236,985.01 × 82,821,323.58
  4. Step 4: Simplify right side
    138,587,005.38x = 15,838,500,215,976,818
  5. Step 5: Solve for x
    x = 15,838,500,215,976,818/138,587,005.38
  6. Step 6: Final answer
    x = 114,285,608.33

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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.