Home / 138,733.82-191,453.18-75,071.62

Finding the Fourth Proportional to 138,733.82, 191,453.18 and 75,071.62

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Solution

The fourth proportional to 138,733.82, 191,453.18 and 75,071.62 is: 103,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733.82 : 191,453.18 = 75,071.62 : x
  2. Step 2: Convert to fraction form
    138,733.82/191,453.18 = 75,071.62/x
  3. Step 3: Cross multiply
    138,733.82x = 191,453.18 × 75,071.62
  4. Step 4: Simplify right side
    138,733.82x = 14,372,699,044.13
  5. Step 5: Solve for x
    x = 14,372,699,044.13/138,733.82
  6. Step 6: Final answer
    x = 103,599.10

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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.