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Finding the Fourth Proportional to 188,695.89, 260,405.19 and 102,660.21

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Solution

The fourth proportional to 188,695.89, 260,405.19 and 102,660.21 is: 141,673.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,695.89 : 260,405.19 = 102,660.21 : x
  2. Step 2: Convert to fraction form
    188,695.89/260,405.19 = 102,660.21/x
  3. Step 3: Cross multiply
    188,695.89x = 260,405.19 × 102,660.21
  4. Step 4: Simplify right side
    188,695.89x = 26,733,251,490.49
  5. Step 5: Solve for x
    x = 26,733,251,490.49/188,695.89
  6. Step 6: Final answer
    x = 141,673.73

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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.