Home / 166,128.20-229,256.91-90,676.70

Finding the Fourth Proportional to 166,128.20, 229,256.91 and 90,676.70

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Solution

The fourth proportional to 166,128.20, 229,256.91 and 90,676.70 is: 125,133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,128.20 : 229,256.91 = 90,676.70 : x
  2. Step 2: Convert to fraction form
    166,128.20/229,256.91 = 90,676.70/x
  3. Step 3: Cross multiply
    166,128.20x = 229,256.91 × 90,676.70
  4. Step 4: Simplify right side
    166,128.20x = 20,788,260,051.00
  5. Step 5: Solve for x
    x = 20,788,260,051.00/166,128.20
  6. Step 6: Final answer
    x = 125,133.84

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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.