Home / 138,500.82-191,131.19-74,838.62

Finding the Fourth Proportional to 138,500.82, 191,131.19 and 74,838.62

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Solution

The fourth proportional to 138,500.82, 191,131.19 and 74,838.62 is: 103,277.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,500.82 : 191,131.19 = 74,838.62 : x
  2. Step 2: Convert to fraction form
    138,500.82/191,131.19 = 74,838.62/x
  3. Step 3: Cross multiply
    138,500.82x = 191,131.19 × 74,838.62
  4. Step 4: Simplify right side
    138,500.82x = 14,303,993,168.71
  5. Step 5: Solve for x
    x = 14,303,993,168.71/138,500.82
  6. Step 6: Final answer
    x = 103,277.32

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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.