Home / 217,920.10-326,815.35-84,723.70

Finding the Fourth Proportional to 217,920.10, 326,815.35 and 84,723.70

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Solution

The fourth proportional to 217,920.10, 326,815.35 and 84,723.70 is: 127,060.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,920.10 : 326,815.35 = 84,723.70 : x
  2. Step 2: Convert to fraction form
    217,920.10/326,815.35 = 84,723.70/x
  3. Step 3: Cross multiply
    217,920.10x = 326,815.35 × 84,723.70
  4. Step 4: Simplify right side
    217,920.10x = 27,689,005,668.80
  5. Step 5: Solve for x
    x = 27,689,005,668.80/217,920.10
  6. Step 6: Final answer
    x = 127,060.36

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1.5x scale

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.