Home / 189,640.34-261,714.89-109,090.70

Finding the Fourth Proportional to 189,640.34, 261,714.89 and 109,090.70

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Solution

The fourth proportional to 189,640.34, 261,714.89 and 109,090.70 is: 150,551.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,640.34 : 261,714.89 = 109,090.70 : x
  2. Step 2: Convert to fraction form
    189,640.34/261,714.89 = 109,090.70/x
  3. Step 3: Cross multiply
    189,640.34x = 261,714.89 × 109,090.70
  4. Step 4: Simplify right side
    189,640.34x = 28,550,660,005.07
  5. Step 5: Solve for x
    x = 28,550,660,005.07/189,640.34
  6. Step 6: Final answer
    x = 150,551.62

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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.