Home / 138,718,108.30-191,430,973.05-82,963,520.10

Finding the Fourth Proportional to 138,718,108.30, 191,430,973.05 and 82,963,520.10

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Solution

The fourth proportional to 138,718,108.30, 191,430,973.05 and 82,963,520.10 is: 114,489,647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,718,108.30 : 191,430,973.05 = 82,963,520.10 : x
  2. Step 2: Convert to fraction form
    138,718,108.30/191,430,973.05 = 82,963,520.10/x
  3. Step 3: Cross multiply
    138,718,108.30x = 191,430,973.05 × 82,963,520.10
  4. Step 4: Simplify right side
    138,718,108.30x = 15,881,787,380,396,234
  5. Step 5: Solve for x
    x = 15,881,787,380,396,234/138,718,108.30
  6. Step 6: Final answer
    x = 114,489,647.93

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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.