Home / 223,835.12-308,895.59-121,863.66

Finding the Fourth Proportional to 223,835.12, 308,895.59 and 121,863.66

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Solution

The fourth proportional to 223,835.12, 308,895.59 and 121,863.66 is: 168,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,835.12 : 308,895.59 = 121,863.66 : x
  2. Step 2: Convert to fraction form
    223,835.12/308,895.59 = 121,863.66/x
  3. Step 3: Cross multiply
    223,835.12x = 308,895.59 × 121,863.66
  4. Step 4: Simplify right side
    223,835.12x = 37,643,148,039.10
  5. Step 5: Solve for x
    x = 37,643,148,039.10/223,835.12
  6. Step 6: Final answer
    x = 168,173.56

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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.