Home / 138,741.39-191,463.62-75,079.17

Finding the Fourth Proportional to 138,741.39, 191,463.62 and 75,079.17

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Solution

The fourth proportional to 138,741.39, 191,463.62 and 75,079.17 is: 103,609.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,741.39 : 191,463.62 = 75,079.17 : x
  2. Step 2: Convert to fraction form
    138,741.39/191,463.62 = 75,079.17/x
  3. Step 3: Cross multiply
    138,741.39x = 191,463.62 × 75,079.17
  4. Step 4: Simplify right side
    138,741.39x = 14,374,929,299.40
  5. Step 5: Solve for x
    x = 14,374,929,299.40/138,741.39
  6. Step 6: Final answer
    x = 103,609.52

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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.