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Finding the Fourth Proportional to 196,615, 271,251.68 and 121,032.28

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Solution

The fourth proportional to 196,615, 271,251.68 and 121,032.28 is: 166,977.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,615 : 271,251.68 = 121,032.28 : x
  2. Step 2: Convert to fraction form
    196,615/271,251.68 = 121,032.28/x
  3. Step 3: Cross multiply
    196,615x = 271,251.68 × 121,032.28
  4. Step 4: Simplify right side
    196,615x = 32,830,209,284.23
  5. Step 5: Solve for x
    x = 32,830,209,284.23/196,615
  6. Step 6: Final answer
    x = 166,977.13

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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.