Home / 154,765.85-213,621.15-91,140.54

Finding the Fourth Proportional to 154,765.85, 213,621.15 and 91,140.54

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Solution

The fourth proportional to 154,765.85, 213,621.15 and 91,140.54 is: 125,800.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,765.85 : 213,621.15 = 91,140.54 : x
  2. Step 2: Convert to fraction form
    154,765.85/213,621.15 = 91,140.54/x
  3. Step 3: Cross multiply
    154,765.85x = 213,621.15 × 91,140.54
  4. Step 4: Simplify right side
    154,765.85x = 19,469,546,966.42
  5. Step 5: Solve for x
    x = 19,469,546,966.42/154,765.85
  6. Step 6: Final answer
    x = 125,800.02

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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.