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Finding the Fourth Proportional to 123,027.65, 168,670.89 and 120,785.63

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Solution

The fourth proportional to 123,027.65, 168,670.89 and 120,785.63 is: 165,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,027.65 : 168,670.89 = 120,785.63 : x
  2. Step 2: Convert to fraction form
    123,027.65/168,670.89 = 120,785.63/x
  3. Step 3: Cross multiply
    123,027.65x = 168,670.89 × 120,785.63
  4. Step 4: Simplify right side
    123,027.65x = 20,373,020,132.99
  5. Step 5: Solve for x
    x = 20,373,020,132.99/123,027.65
  6. Step 6: Final answer
    x = 165,597.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.