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Finding the Fourth Proportional to 163,212.92, 225,235.50 and 90,617

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Solution

The fourth proportional to 163,212.92, 225,235.50 and 90,617 is: 125,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,212.92 : 225,235.50 = 90,617 : x
  2. Step 2: Convert to fraction form
    163,212.92/225,235.50 = 90,617/x
  3. Step 3: Cross multiply
    163,212.92x = 225,235.50 × 90,617
  4. Step 4: Simplify right side
    163,212.92x = 20,410,165,303.50
  5. Step 5: Solve for x
    x = 20,410,165,303.50/163,212.92
  6. Step 6: Final answer
    x = 125,052.39

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1.5x scale

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.