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Finding the Fourth Proportional to 123,930.63, 171,023.68 and 70,215.54

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Solution

The fourth proportional to 123,930.63, 171,023.68 and 70,215.54 is: 96,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,930.63 : 171,023.68 = 70,215.54 : x
  2. Step 2: Convert to fraction form
    123,930.63/171,023.68 = 70,215.54/x
  3. Step 3: Cross multiply
    123,930.63x = 171,023.68 × 70,215.54
  4. Step 4: Simplify right side
    123,930.63x = 12,008,520,043.99
  5. Step 5: Solve for x
    x = 12,008,520,043.99/123,930.63
  6. Step 6: Final answer
    x = 96,897.11

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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.