Home / 138,455.82-191,069.03-74,793.62

Finding the Fourth Proportional to 138,455.82, 191,069.03 and 74,793.62

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Solution

The fourth proportional to 138,455.82, 191,069.03 and 74,793.62 is: 103,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,455.82 : 191,069.03 = 74,793.62 : x
  2. Step 2: Convert to fraction form
    138,455.82/191,069.03 = 74,793.62/x
  3. Step 3: Cross multiply
    138,455.82x = 191,069.03 × 74,793.62
  4. Step 4: Simplify right side
    138,455.82x = 14,290,743,094.28
  5. Step 5: Solve for x
    x = 14,290,743,094.28/138,455.82
  6. Step 6: Final answer
    x = 103,215.19

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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.