Home / 138,592.39-191,257.58-74,930.65

Finding the Fourth Proportional to 138,592.39, 191,257.58 and 74,930.65

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Solution

The fourth proportional to 138,592.39, 191,257.58 and 74,930.65 is: 103,404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,592.39 : 191,257.58 = 74,930.65 : x
  2. Step 2: Convert to fraction form
    138,592.39/191,257.58 = 74,930.65/x
  3. Step 3: Cross multiply
    138,592.39x = 191,257.58 × 74,930.65
  4. Step 4: Simplify right side
    138,592.39x = 14,331,054,786.83
  5. Step 5: Solve for x
    x = 14,331,054,786.83/138,592.39
  6. Step 6: Final answer
    x = 103,404.34

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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.