Home / 166,139.82-229,272.66-90,688.32

Finding the Fourth Proportional to 166,139.82, 229,272.66 and 90,688.32

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Solution

The fourth proportional to 166,139.82, 229,272.66 and 90,688.32 is: 125,149.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,139.82 : 229,272.66 = 90,688.32 : x
  2. Step 2: Convert to fraction form
    166,139.82/229,272.66 = 90,688.32/x
  3. Step 3: Cross multiply
    166,139.82x = 229,272.66 × 90,688.32
  4. Step 4: Simplify right side
    166,139.82x = 20,792,352,357.33
  5. Step 5: Solve for x
    x = 20,792,352,357.33/166,139.82
  6. Step 6: Final answer
    x = 125,149.72

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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.