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Finding the Fourth Proportional to 140,172.40, 210,258.60 and 105,180.40

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Solution

The fourth proportional to 140,172.40, 210,258.60 and 105,180.40 is: 157,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,172.40 : 210,258.60 = 105,180.40 : x
  2. Step 2: Convert to fraction form
    140,172.40/210,258.60 = 105,180.40/x
  3. Step 3: Cross multiply
    140,172.40x = 210,258.60 × 105,180.40
  4. Step 4: Simplify right side
    140,172.40x = 22,115,083,651.44
  5. Step 5: Solve for x
    x = 22,115,083,651.44/140,172.40
  6. Step 6: Final answer
    x = 157,770.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.