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Finding the Fourth Proportional to 138,606.84, 207,935.91 and 43,860.84

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Solution

The fourth proportional to 138,606.84, 207,935.91 and 43,860.84 is: 65,799.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.84 : 207,935.91 = 43,860.84 : x
  2. Step 2: Convert to fraction form
    138,606.84/207,935.91 = 43,860.84/x
  3. Step 3: Cross multiply
    138,606.84x = 207,935.91 × 43,860.84
  4. Step 4: Simplify right side
    138,606.84x = 9,120,243,678.76
  5. Step 5: Solve for x
    x = 9,120,243,678.76/138,606.84
  6. Step 6: Final answer
    x = 65,799.38

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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.