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Finding the Fourth Proportional to 140,940.20, 211,410.30 and 61,970.60

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Solution

The fourth proportional to 140,940.20, 211,410.30 and 61,970.60 is: 92,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,940.20 : 211,410.30 = 61,970.60 : x
  2. Step 2: Convert to fraction form
    140,940.20/211,410.30 = 61,970.60/x
  3. Step 3: Cross multiply
    140,940.20x = 211,410.30 × 61,970.60
  4. Step 4: Simplify right side
    140,940.20x = 13,101,223,137.18
  5. Step 5: Solve for x
    x = 13,101,223,137.18/140,940.20
  6. Step 6: Final answer
    x = 92,955.90

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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.