Home / 154,638.03-213,396.86-90,979.92

Finding the Fourth Proportional to 154,638.03, 213,396.86 and 90,979.92

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Solution

The fourth proportional to 154,638.03, 213,396.86 and 90,979.92 is: 125,550.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,638.03 : 213,396.86 = 90,979.92 : x
  2. Step 2: Convert to fraction form
    154,638.03/213,396.86 = 90,979.92/x
  3. Step 3: Cross multiply
    154,638.03x = 213,396.86 × 90,979.92
  4. Step 4: Simplify right side
    154,638.03x = 19,414,828,796.15
  5. Step 5: Solve for x
    x = 19,414,828,796.15/154,638.03
  6. Step 6: Final answer
    x = 125,550.16

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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.