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Finding the Fourth Proportional to 166,618.90, 229,933.04 and 90,137.69

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Solution

The fourth proportional to 166,618.90, 229,933.04 and 90,137.69 is: 124,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,618.90 : 229,933.04 = 90,137.69 : x
  2. Step 2: Convert to fraction form
    166,618.90/229,933.04 = 90,137.69/x
  3. Step 3: Cross multiply
    166,618.90x = 229,933.04 × 90,137.69
  4. Step 4: Simplify right side
    166,618.90x = 20,725,633,080.28
  5. Step 5: Solve for x
    x = 20,725,633,080.28/166,618.90
  6. Step 6: Final answer
    x = 124,389.45

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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.