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Finding the Fourth Proportional to 140,172.16, 193,420.56 and 79,750.56

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Solution

The fourth proportional to 140,172.16, 193,420.56 and 79,750.56 is: 110,046.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,172.16 : 193,420.56 = 79,750.56 : x
  2. Step 2: Convert to fraction form
    140,172.16/193,420.56 = 79,750.56/x
  3. Step 3: Cross multiply
    140,172.16x = 193,420.56 × 79,750.56
  4. Step 4: Simplify right side
    140,172.16x = 15,425,397,975.51
  5. Step 5: Solve for x
    x = 15,425,397,975.51/140,172.16
  6. Step 6: Final answer
    x = 110,046.09

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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.