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Finding the Fourth Proportional to 163,219.92, 225,245.16 and 90,624

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Solution

The fourth proportional to 163,219.92, 225,245.16 and 90,624 is: 125,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,219.92 : 225,245.16 = 90,624 : x
  2. Step 2: Convert to fraction form
    163,219.92/225,245.16 = 90,624/x
  3. Step 3: Cross multiply
    163,219.92x = 225,245.16 × 90,624
  4. Step 4: Simplify right side
    163,219.92x = 20,412,617,379.84
  5. Step 5: Solve for x
    x = 20,412,617,379.84/163,219.92
  6. Step 6: Final answer
    x = 125,062.05

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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.