Home / 138,724,678.58-191,439,989.78-82,970,098.01

Finding the Fourth Proportional to 138,724,678.58, 191,439,989.78 and 82,970,098.01

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Solution

The fourth proportional to 138,724,678.58, 191,439,989.78 and 82,970,098.01 is: 114,498,695.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724,678.58 : 191,439,989.78 = 82,970,098.01 : x
  2. Step 2: Convert to fraction form
    138,724,678.58/191,439,989.78 = 82,970,098.01/x
  3. Step 3: Cross multiply
    138,724,678.58x = 191,439,989.78 × 82,970,098.01
  4. Step 4: Simplify right side
    138,724,678.58x = 15,883,794,713,707,948
  5. Step 5: Solve for x
    x = 15,883,794,713,707,948/138,724,678.58
  6. Step 6: Final answer
    x = 114,498,695.38

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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.