Home / 163,143.37-225,118.16-90,545.90

Finding the Fourth Proportional to 163,143.37, 225,118.16 and 90,545.90

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Solution

The fourth proportional to 163,143.37, 225,118.16 and 90,545.90 is: 124,942.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,143.37 : 225,118.16 = 90,545.90 : x
  2. Step 2: Convert to fraction form
    163,143.37/225,118.16 = 90,545.90/x
  3. Step 3: Cross multiply
    163,143.37x = 225,118.16 × 90,545.90
  4. Step 4: Simplify right side
    163,143.37x = 20,383,526,685.72
  5. Step 5: Solve for x
    x = 20,383,526,685.72/163,143.37
  6. Step 6: Final answer
    x = 124,942.42

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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.