Home / 220,159.10-330,134.55-85,286.34

Finding the Fourth Proportional to 220,159.10, 330,134.55 and 85,286.34

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Solution

The fourth proportional to 220,159.10, 330,134.55 and 85,286.34 is: 127,889.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,159.10 : 330,134.55 = 85,286.34 : x
  2. Step 2: Convert to fraction form
    220,159.10/330,134.55 = 85,286.34/x
  3. Step 3: Cross multiply
    220,159.10x = 330,134.55 × 85,286.34
  4. Step 4: Simplify right side
    220,159.10x = 28,155,967,477.05
  5. Step 5: Solve for x
    x = 28,155,967,477.05/220,159.10
  6. Step 6: Final answer
    x = 127,889.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.