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Finding the Fourth Proportional to 109,133.43, 150,605.38 and 61,386.36

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Solution

The fourth proportional to 109,133.43, 150,605.38 and 61,386.36 is: 84,713.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,133.43 : 150,605.38 = 61,386.36 : x
  2. Step 2: Convert to fraction form
    109,133.43/150,605.38 = 61,386.36/x
  3. Step 3: Cross multiply
    109,133.43x = 150,605.38 × 61,386.36
  4. Step 4: Simplify right side
    109,133.43x = 9,245,116,074.62
  5. Step 5: Solve for x
    x = 9,245,116,074.62/109,133.43
  6. Step 6: Final answer
    x = 84,713.88

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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.