Home / 147,614.09-203,638.34-87,143.54

Finding the Fourth Proportional to 147,614.09, 203,638.34 and 87,143.54

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Solution

The fourth proportional to 147,614.09, 203,638.34 and 87,143.54 is: 120,217.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,614.09 : 203,638.34 = 87,143.54 : x
  2. Step 2: Convert to fraction form
    147,614.09/203,638.34 = 87,143.54/x
  3. Step 3: Cross multiply
    147,614.09x = 203,638.34 × 87,143.54
  4. Step 4: Simplify right side
    147,614.09x = 17,745,765,391.61
  5. Step 5: Solve for x
    x = 17,745,765,391.61/147,614.09
  6. Step 6: Final answer
    x = 120,217.29

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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.