Home / 154,403.20-213,080.24-86,419.60

Finding the Fourth Proportional to 154,403.20, 213,080.24 and 86,419.60

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Solution

The fourth proportional to 154,403.20, 213,080.24 and 86,419.60 is: 119,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,403.20 : 213,080.24 = 86,419.60 : x
  2. Step 2: Convert to fraction form
    154,403.20/213,080.24 = 86,419.60/x
  3. Step 3: Cross multiply
    154,403.20x = 213,080.24 × 86,419.60
  4. Step 4: Simplify right side
    154,403.20x = 18,414,309,108.70
  5. Step 5: Solve for x
    x = 18,414,309,108.70/154,403.20
  6. Step 6: Final answer
    x = 119,261.19

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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.