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Finding the Fourth Proportional to 154,686.78, 213,404 and 94,235.36

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Solution

The fourth proportional to 154,686.78, 213,404 and 94,235.36 is: 130,005.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,686.78 : 213,404 = 94,235.36 : x
  2. Step 2: Convert to fraction form
    154,686.78/213,404 = 94,235.36/x
  3. Step 3: Cross multiply
    154,686.78x = 213,404 × 94,235.36
  4. Step 4: Simplify right side
    154,686.78x = 20,110,202,765.44
  5. Step 5: Solve for x
    x = 20,110,202,765.44/154,686.78
  6. Step 6: Final answer
    x = 130,005.96

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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.