Home / 138,544.66-191,063.91-103,951.18

Finding the Fourth Proportional to 138,544.66, 191,063.91 and 103,951.18

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Solution

The fourth proportional to 138,544.66, 191,063.91 and 103,951.18 is: 143,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,544.66 : 191,063.91 = 103,951.18 : x
  2. Step 2: Convert to fraction form
    138,544.66/191,063.91 = 103,951.18/x
  3. Step 3: Cross multiply
    138,544.66x = 191,063.91 × 103,951.18
  4. Step 4: Simplify right side
    138,544.66x = 19,861,318,899.91
  5. Step 5: Solve for x
    x = 19,861,318,899.91/138,544.66
  6. Step 6: Final answer
    x = 143,356.80

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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.