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Finding the Fourth Proportional to 154,480.44, 213,133.44 and 86,487.40

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Solution

The fourth proportional to 154,480.44, 213,133.44 and 86,487.40 is: 119,324.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,480.44 : 213,133.44 = 86,487.40 : x
  2. Step 2: Convert to fraction form
    154,480.44/213,133.44 = 86,487.40/x
  3. Step 3: Cross multiply
    154,480.44x = 213,133.44 × 86,487.40
  4. Step 4: Simplify right side
    154,480.44x = 18,433,357,078.66
  5. Step 5: Solve for x
    x = 18,433,357,078.66/154,480.44
  6. Step 6: Final answer
    x = 119,324.86

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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.