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Finding the Fourth Proportional to 140,751.19, 194,239.79 and 80,320.63

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Solution

The fourth proportional to 140,751.19, 194,239.79 and 80,320.63 is: 110,844.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,751.19 : 194,239.79 = 80,320.63 : x
  2. Step 2: Convert to fraction form
    140,751.19/194,239.79 = 80,320.63/x
  3. Step 3: Cross multiply
    140,751.19x = 194,239.79 × 80,320.63
  4. Step 4: Simplify right side
    140,751.19x = 15,601,462,303.87
  5. Step 5: Solve for x
    x = 15,601,462,303.87/140,751.19
  6. Step 6: Final answer
    x = 110,844.27

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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.