Home / 217,140.38-299,652.72-121,647.86

Finding the Fourth Proportional to 217,140.38, 299,652.72 and 121,647.86

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Solution

The fourth proportional to 217,140.38, 299,652.72 and 121,647.86 is: 167,873.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,140.38 : 299,652.72 = 121,647.86 : x
  2. Step 2: Convert to fraction form
    217,140.38/299,652.72 = 121,647.86/x
  3. Step 3: Cross multiply
    217,140.38x = 299,652.72 × 121,647.86
  4. Step 4: Simplify right side
    217,140.38x = 36,452,112,131.18
  5. Step 5: Solve for x
    x = 36,452,112,131.18/217,140.38
  6. Step 6: Final answer
    x = 167,873.48

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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.