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Finding the Fourth Proportional to 163,074.99, 225,068.09 and 99,449.69

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Solution

The fourth proportional to 163,074.99, 225,068.09 and 99,449.69 is: 137,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,074.99 : 225,068.09 = 99,449.69 : x
  2. Step 2: Convert to fraction form
    163,074.99/225,068.09 = 99,449.69/x
  3. Step 3: Cross multiply
    163,074.99x = 225,068.09 × 99,449.69
  4. Step 4: Simplify right side
    163,074.99x = 22,382,951,844.81
  5. Step 5: Solve for x
    x = 22,382,951,844.81/163,074.99
  6. Step 6: Final answer
    x = 137,255.58

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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.