Home / 154,520.79-213,221.07-86,528.31

Finding the Fourth Proportional to 154,520.79, 213,221.07 and 86,528.31

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Solution

The fourth proportional to 154,520.79, 213,221.07 and 86,528.31 is: 119,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,520.79 : 213,221.07 = 86,528.31 : x
  2. Step 2: Convert to fraction form
    154,520.79/213,221.07 = 86,528.31/x
  3. Step 3: Cross multiply
    154,520.79x = 213,221.07 × 86,528.31
  4. Step 4: Simplify right side
    154,520.79x = 18,449,658,843.49
  5. Step 5: Solve for x
    x = 18,449,658,843.49/154,520.79
  6. Step 6: Final answer
    x = 119,399.20

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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.