Home / 166,288.57-229,478.93-90,838.69

Finding the Fourth Proportional to 166,288.57, 229,478.93 and 90,838.69

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Solution

The fourth proportional to 166,288.57, 229,478.93 and 90,838.69 is: 125,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,288.57 : 229,478.93 = 90,838.69 : x
  2. Step 2: Convert to fraction form
    166,288.57/229,478.93 = 90,838.69/x
  3. Step 3: Cross multiply
    166,288.57x = 229,478.93 × 90,838.69
  4. Step 4: Simplify right side
    166,288.57x = 20,845,565,383.80
  5. Step 5: Solve for x
    x = 20,845,565,383.80/166,288.57
  6. Step 6: Final answer
    x = 125,357.78

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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.