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Finding the Fourth Proportional to 103,141.51, 154,622.82 and 39,918.11

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Solution

The fourth proportional to 103,141.51, 154,622.82 and 39,918.11 is: 59,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,141.51 : 154,622.82 = 39,918.11 : x
  2. Step 2: Convert to fraction form
    103,141.51/154,622.82 = 39,918.11/x
  3. Step 3: Cross multiply
    103,141.51x = 154,622.82 × 39,918.11
  4. Step 4: Simplify right side
    103,141.51x = 6,172,251,123.83
  5. Step 5: Solve for x
    x = 6,172,251,123.83/103,141.51
  6. Step 6: Final answer
    x = 59,842.55

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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.