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Finding the Fourth Proportional to 163,354.74, 225,412.74 and 91,734.18

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Solution

The fourth proportional to 163,354.74, 225,412.74 and 91,734.18 is: 126,583.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,354.74 : 225,412.74 = 91,734.18 : x
  2. Step 2: Convert to fraction form
    163,354.74/225,412.74 = 91,734.18/x
  3. Step 3: Cross multiply
    163,354.74x = 225,412.74 × 91,734.18
  4. Step 4: Simplify right side
    163,354.74x = 20,678,052,865.45
  5. Step 5: Solve for x
    x = 20,678,052,865.45/163,354.74
  6. Step 6: Final answer
    x = 126,583.73

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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.