Home / 154,403.76-213,080.97-86,420.16

Finding the Fourth Proportional to 154,403.76, 213,080.97 and 86,420.16

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Solution

The fourth proportional to 154,403.76, 213,080.97 and 86,420.16 is: 119,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,403.76 : 213,080.97 = 86,420.16 : x
  2. Step 2: Convert to fraction form
    154,403.76/213,080.97 = 86,420.16/x
  3. Step 3: Cross multiply
    154,403.76x = 213,080.97 × 86,420.16
  4. Step 4: Simplify right side
    154,403.76x = 18,414,491,520.36
  5. Step 5: Solve for x
    x = 18,414,491,520.36/154,403.76
  6. Step 6: Final answer
    x = 119,261.94

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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.