Home / 138,724,672.20-191,439,980.97-82,970,091.63

Finding the Fourth Proportional to 138,724,672.20, 191,439,980.97 and 82,970,091.63

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Solution

The fourth proportional to 138,724,672.20, 191,439,980.97 and 82,970,091.63 is: 114,498,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724,672.20 : 191,439,980.97 = 82,970,091.63 : x
  2. Step 2: Convert to fraction form
    138,724,672.20/191,439,980.97 = 82,970,091.63/x
  3. Step 3: Cross multiply
    138,724,672.20x = 191,439,980.97 × 82,970,091.63
  4. Step 4: Simplify right side
    138,724,672.20x = 15,883,792,762,726,356
  5. Step 5: Solve for x
    x = 15,883,792,762,726,356/138,724,672.20
  6. Step 6: Final answer
    x = 114,498,686.58

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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.