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Finding the Fourth Proportional to 212,872.00, 293,752.80 and 120,979.27

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Solution

The fourth proportional to 212,872.00, 293,752.80 and 120,979.27 is: 166,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,872.00 : 293,752.80 = 120,979.27 : x
  2. Step 2: Convert to fraction form
    212,872.00/293,752.80 = 120,979.27/x
  3. Step 3: Cross multiply
    212,872.00x = 293,752.80 × 120,979.27
  4. Step 4: Simplify right side
    212,872.00x = 35,537,998,570.07
  5. Step 5: Solve for x
    x = 35,537,998,570.07/212,872.00
  6. Step 6: Final answer
    x = 166,945.39

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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.