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Finding the Fourth Proportional to 216,142.54, 298,275.56 and 125,520.79

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Solution

The fourth proportional to 216,142.54, 298,275.56 and 125,520.79 is: 173,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,142.54 : 298,275.56 = 125,520.79 : x
  2. Step 2: Convert to fraction form
    216,142.54/298,275.56 = 125,520.79/x
  3. Step 3: Cross multiply
    216,142.54x = 298,275.56 × 125,520.79
  4. Step 4: Simplify right side
    216,142.54x = 37,439,784,291.62
  5. Step 5: Solve for x
    x = 37,439,784,291.62/216,142.54
  6. Step 6: Final answer
    x = 173,218.02

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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.