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Finding the Fourth Proportional to 122,057.80, 168,383.82 and 73,678.12

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Solution

The fourth proportional to 122,057.80, 168,383.82 and 73,678.12 is: 101,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,057.80 : 168,383.82 = 73,678.12 : x
  2. Step 2: Convert to fraction form
    122,057.80/168,383.82 = 73,678.12/x
  3. Step 3: Cross multiply
    122,057.80x = 168,383.82 × 73,678.12
  4. Step 4: Simplify right side
    122,057.80x = 12,406,203,296.02
  5. Step 5: Solve for x
    x = 12,406,203,296.02/122,057.80
  6. Step 6: Final answer
    x = 101,642.04

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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.