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Finding the Fourth Proportional to 213,139.92, 294,112.11 and 117,640.42

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Solution

The fourth proportional to 213,139.92, 294,112.11 and 117,640.42 is: 162,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,139.92 : 294,112.11 = 117,640.42 : x
  2. Step 2: Convert to fraction form
    213,139.92/294,112.11 = 117,640.42/x
  3. Step 3: Cross multiply
    213,139.92x = 294,112.11 × 117,640.42
  4. Step 4: Simplify right side
    213,139.92x = 34,599,472,147.49
  5. Step 5: Solve for x
    x = 34,599,472,147.49/213,139.92
  6. Step 6: Final answer
    x = 162,332.20

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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.