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Finding the Fourth Proportional to 140,377.62, 193,720.80 and 79,948.26

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Solution

The fourth proportional to 140,377.62, 193,720.80 and 79,948.26 is: 110,328.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,377.62 : 193,720.80 = 79,948.26 : x
  2. Step 2: Convert to fraction form
    140,377.62/193,720.80 = 79,948.26/x
  3. Step 3: Cross multiply
    140,377.62x = 193,720.80 × 79,948.26
  4. Step 4: Simplify right side
    140,377.62x = 15,487,640,885.81
  5. Step 5: Solve for x
    x = 15,487,640,885.81/140,377.62
  6. Step 6: Final answer
    x = 110,328.42

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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.