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Finding the Fourth Proportional to 140,463.74, 193,858.95 and 79,222.51

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Solution

The fourth proportional to 140,463.74, 193,858.95 and 79,222.51 is: 109,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,463.74 : 193,858.95 = 79,222.51 : x
  2. Step 2: Convert to fraction form
    140,463.74/193,858.95 = 79,222.51/x
  3. Step 3: Cross multiply
    140,463.74x = 193,858.95 × 79,222.51
  4. Step 4: Simplify right side
    140,463.74x = 15,357,992,698.75
  5. Step 5: Solve for x
    x = 15,357,992,698.75/140,463.74
  6. Step 6: Final answer
    x = 109,337.78

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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.