Home / 138,581.22-191,242.04-74,919

Finding the Fourth Proportional to 138,581.22, 191,242.04 and 74,919

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Solution

The fourth proportional to 138,581.22, 191,242.04 and 74,919 is: 103,388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,581.22 : 191,242.04 = 74,919 : x
  2. Step 2: Convert to fraction form
    138,581.22/191,242.04 = 74,919/x
  3. Step 3: Cross multiply
    138,581.22x = 191,242.04 × 74,919
  4. Step 4: Simplify right side
    138,581.22x = 14,327,662,020.17
  5. Step 5: Solve for x
    x = 14,327,662,020.17/138,581.22
  6. Step 6: Final answer
    x = 103,388.19

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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.