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Finding the Fourth Proportional to 140,411.41, 193,740.87 and 79,980.73

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Solution

The fourth proportional to 140,411.41, 193,740.87 and 79,980.73 is: 110,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,411.41 : 193,740.87 = 79,980.73 : x
  2. Step 2: Convert to fraction form
    140,411.41/193,740.87 = 79,980.73/x
  3. Step 3: Cross multiply
    140,411.41x = 193,740.87 × 79,980.73
  4. Step 4: Simplify right side
    140,411.41x = 15,495,536,213.44
  5. Step 5: Solve for x
    x = 15,495,536,213.44/140,411.41
  6. Step 6: Final answer
    x = 110,358.10

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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.