Home / 217,180.16-299,708.40-121,687.54

Finding the Fourth Proportional to 217,180.16, 299,708.40 and 121,687.54

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Solution

The fourth proportional to 217,180.16, 299,708.40 and 121,687.54 is: 167,928.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,180.16 : 299,708.40 = 121,687.54 : x
  2. Step 2: Convert to fraction form
    217,180.16/299,708.40 = 121,687.54/x
  3. Step 3: Cross multiply
    217,180.16x = 299,708.40 × 121,687.54
  4. Step 4: Simplify right side
    217,180.16x = 36,470,777,913.34
  5. Step 5: Solve for x
    x = 36,470,777,913.34/217,180.16
  6. Step 6: Final answer
    x = 167,928.68

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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.