Home / 213,593.38-320,138.56-87,154.72

Finding the Fourth Proportional to 213,593.38, 320,138.56 and 87,154.72

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Solution

The fourth proportional to 213,593.38, 320,138.56 and 87,154.72 is: 130,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,593.38 : 320,138.56 = 87,154.72 : x
  2. Step 2: Convert to fraction form
    213,593.38/320,138.56 = 87,154.72/x
  3. Step 3: Cross multiply
    213,593.38x = 320,138.56 × 87,154.72
  4. Step 4: Simplify right side
    213,593.38x = 27,901,586,558.00
  5. Step 5: Solve for x
    x = 27,901,586,558.00/213,593.38
  6. Step 6: Final answer
    x = 130,629.45

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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.