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Finding the Fourth Proportional to 140,674.74, 194,133.47 and 79,424.16

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Solution

The fourth proportional to 140,674.74, 194,133.47 and 79,424.16 is: 109,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,674.74 : 194,133.47 = 79,424.16 : x
  2. Step 2: Convert to fraction form
    140,674.74/194,133.47 = 79,424.16/x
  3. Step 3: Cross multiply
    140,674.74x = 194,133.47 × 79,424.16
  4. Step 4: Simplify right side
    140,674.74x = 15,418,887,385.51
  5. Step 5: Solve for x
    x = 15,418,887,385.51/140,674.74
  6. Step 6: Final answer
    x = 109,606.65

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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.