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Finding the Fourth Proportional to 115,891.40, 173,618.40 and 108,018.20

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Solution

The fourth proportional to 115,891.40, 173,618.40 and 108,018.20 is: 161,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,891.40 : 173,618.40 = 108,018.20 : x
  2. Step 2: Convert to fraction form
    115,891.40/173,618.40 = 108,018.20/x
  3. Step 3: Cross multiply
    115,891.40x = 173,618.40 × 108,018.20
  4. Step 4: Simplify right side
    115,891.40x = 18,753,947,054.88
  5. Step 5: Solve for x
    x = 18,753,947,054.88/115,891.40
  6. Step 6: Final answer
    x = 161,823.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.