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Finding the Fourth Proportional to 71,200.14, 106,800.48 and 66,869.88

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Solution

The fourth proportional to 71,200.14, 106,800.48 and 66,869.88 is: 100,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,200.14 : 106,800.48 = 66,869.88 : x
  2. Step 2: Convert to fraction form
    71,200.14/106,800.48 = 66,869.88/x
  3. Step 3: Cross multiply
    71,200.14x = 106,800.48 × 66,869.88
  4. Step 4: Simplify right side
    71,200.14x = 7,141,735,281.54
  5. Step 5: Solve for x
    x = 7,141,735,281.54/71,200.14
  6. Step 6: Final answer
    x = 100,305.07

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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.