Home / 154,638.54-213,397.56-90,980.42

Finding the Fourth Proportional to 154,638.54, 213,397.56 and 90,980.42

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Solution

The fourth proportional to 154,638.54, 213,397.56 and 90,980.42 is: 125,550.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,638.54 : 213,397.56 = 90,980.42 : x
  2. Step 2: Convert to fraction form
    154,638.54/213,397.56 = 90,980.42/x
  3. Step 3: Cross multiply
    154,638.54x = 213,397.56 × 90,980.42
  4. Step 4: Simplify right side
    154,638.54x = 19,414,999,635.78
  5. Step 5: Solve for x
    x = 19,414,999,635.78/154,638.54
  6. Step 6: Final answer
    x = 125,550.85

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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.