Home / 140,457.78-193,832.09-76,799.69

Finding the Fourth Proportional to 140,457.78, 193,832.09 and 76,799.69

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Solution

The fourth proportional to 140,457.78, 193,832.09 and 76,799.69 is: 105,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,457.78 : 193,832.09 = 76,799.69 : x
  2. Step 2: Convert to fraction form
    140,457.78/193,832.09 = 76,799.69/x
  3. Step 3: Cross multiply
    140,457.78x = 193,832.09 × 76,799.69
  4. Step 4: Simplify right side
    140,457.78x = 14,886,244,424.05
  5. Step 5: Solve for x
    x = 14,886,244,424.05/140,457.78
  6. Step 6: Final answer
    x = 105,983.77

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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.