Home / 221,795.20-306,077.37-121,193.20

Finding the Fourth Proportional to 221,795.20, 306,077.37 and 121,193.20

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Solution

The fourth proportional to 221,795.20, 306,077.37 and 121,193.20 is: 167,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,795.20 : 306,077.37 = 121,193.20 : x
  2. Step 2: Convert to fraction form
    221,795.20/306,077.37 = 121,193.20/x
  3. Step 3: Cross multiply
    221,795.20x = 306,077.37 × 121,193.20
  4. Step 4: Simplify right side
    221,795.20x = 37,094,495,917.88
  5. Step 5: Solve for x
    x = 37,094,495,917.88/221,795.20
  6. Step 6: Final answer
    x = 167,246.61

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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.