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Finding the Fourth Proportional to 156,974.60, 235,461.90 and 68,270.60

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Solution

The fourth proportional to 156,974.60, 235,461.90 and 68,270.60 is: 102,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.60 : 235,461.90 = 68,270.60 : x
  2. Step 2: Convert to fraction form
    156,974.60/235,461.90 = 68,270.60/x
  3. Step 3: Cross multiply
    156,974.60x = 235,461.90 × 68,270.60
  4. Step 4: Simplify right side
    156,974.60x = 16,075,125,190.14
  5. Step 5: Solve for x
    x = 16,075,125,190.14/156,974.60
  6. Step 6: Final answer
    x = 102,405.90

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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.