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Finding the Fourth Proportional to 101,246.40, 151,869.60 and 68,068.80

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Solution

The fourth proportional to 101,246.40, 151,869.60 and 68,068.80 is: 102,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,246.40 : 151,869.60 = 68,068.80 : x
  2. Step 2: Convert to fraction form
    101,246.40/151,869.60 = 68,068.80/x
  3. Step 3: Cross multiply
    101,246.40x = 151,869.60 × 68,068.80
  4. Step 4: Simplify right side
    101,246.40x = 10,337,581,428.48
  5. Step 5: Solve for x
    x = 10,337,581,428.48/101,246.40
  6. Step 6: Final answer
    x = 102,103.20

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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.