Home / 217,917.10-326,810.85-84,720.70

Finding the Fourth Proportional to 217,917.10, 326,810.85 and 84,720.70

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Solution

The fourth proportional to 217,917.10, 326,810.85 and 84,720.70 is: 127,055.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,917.10 : 326,810.85 = 84,720.70 : x
  2. Step 2: Convert to fraction form
    217,917.10/326,810.85 = 84,720.70/x
  3. Step 3: Cross multiply
    217,917.10x = 326,810.85 × 84,720.70
  4. Step 4: Simplify right side
    217,917.10x = 27,687,643,979.60
  5. Step 5: Solve for x
    x = 27,687,643,979.60/217,917.10
  6. Step 6: Final answer
    x = 127,055.86

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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.