Home / 149,695.14-206,574.12-89,234.64

Finding the Fourth Proportional to 149,695.14, 206,574.12 and 89,234.64

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Solution

The fourth proportional to 149,695.14, 206,574.12 and 89,234.64 is: 123,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,695.14 : 206,574.12 = 89,234.64 : x
  2. Step 2: Convert to fraction form
    149,695.14/206,574.12 = 89,234.64/x
  3. Step 3: Cross multiply
    149,695.14x = 206,574.12 × 89,234.64
  4. Step 4: Simplify right side
    149,695.14x = 18,433,567,231.52
  5. Step 5: Solve for x
    x = 18,433,567,231.52/149,695.14
  6. Step 6: Final answer
    x = 123,140.72

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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.