Home / 140,637.72-194,080.50-76,979.64

Finding the Fourth Proportional to 140,637.72, 194,080.50 and 76,979.64

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Solution

The fourth proportional to 140,637.72, 194,080.50 and 76,979.64 is: 106,232.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,637.72 : 194,080.50 = 76,979.64 : x
  2. Step 2: Convert to fraction form
    140,637.72/194,080.50 = 76,979.64/x
  3. Step 3: Cross multiply
    140,637.72x = 194,080.50 × 76,979.64
  4. Step 4: Simplify right side
    140,637.72x = 14,940,247,021.02
  5. Step 5: Solve for x
    x = 14,940,247,021.02/140,637.72
  6. Step 6: Final answer
    x = 106,232.15

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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.