Home / 223,319.40-308,181.92-121,345.12

Finding the Fourth Proportional to 223,319.40, 308,181.92 and 121,345.12

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Solution

The fourth proportional to 223,319.40, 308,181.92 and 121,345.12 is: 167,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,319.40 : 308,181.92 = 121,345.12 : x
  2. Step 2: Convert to fraction form
    223,319.40/308,181.92 = 121,345.12/x
  3. Step 3: Cross multiply
    223,319.40x = 308,181.92 × 121,345.12
  4. Step 4: Simplify right side
    223,319.40x = 37,396,372,064.23
  5. Step 5: Solve for x
    x = 37,396,372,064.23/223,319.40
  6. Step 6: Final answer
    x = 167,456.89

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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.