Home / 212,345.39-293,027.96-121,638.30

Finding the Fourth Proportional to 212,345.39, 293,027.96 and 121,638.30

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Solution

The fourth proportional to 212,345.39, 293,027.96 and 121,638.30 is: 167,855.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,345.39 : 293,027.96 = 121,638.30 : x
  2. Step 2: Convert to fraction form
    212,345.39/293,027.96 = 121,638.30/x
  3. Step 3: Cross multiply
    212,345.39x = 293,027.96 × 121,638.30
  4. Step 4: Simplify right side
    212,345.39x = 35,643,422,906.87
  5. Step 5: Solve for x
    x = 35,643,422,906.87/212,345.39
  6. Step 6: Final answer
    x = 167,855.88

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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.