Home / 140,678.72-193,998.39-129,009.11

Finding the Fourth Proportional to 140,678.72, 193,998.39 and 129,009.11

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Solution

The fourth proportional to 140,678.72, 193,998.39 and 129,009.11 is: 177,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,678.72 : 193,998.39 = 129,009.11 : x
  2. Step 2: Convert to fraction form
    140,678.72/193,998.39 = 129,009.11/x
  3. Step 3: Cross multiply
    140,678.72x = 193,998.39 × 129,009.11
  4. Step 4: Simplify right side
    140,678.72x = 25,027,558,665.34
  5. Step 5: Solve for x
    x = 25,027,558,665.34/140,678.72
  6. Step 6: Final answer
    x = 177,905.80

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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.