Home / 189,734.76-261,714.24-121,680.36

Finding the Fourth Proportional to 189,734.76, 261,714.24 and 121,680.36

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Solution

The fourth proportional to 189,734.76, 261,714.24 and 121,680.36 is: 167,842.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,734.76 : 261,714.24 = 121,680.36 : x
  2. Step 2: Convert to fraction form
    189,734.76/261,714.24 = 121,680.36/x
  3. Step 3: Cross multiply
    189,734.76x = 261,714.24 × 121,680.36
  4. Step 4: Simplify right side
    189,734.76x = 31,845,482,940.33
  5. Step 5: Solve for x
    x = 31,845,482,940.33/189,734.76
  6. Step 6: Final answer
    x = 167,842.11

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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.