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Finding the Fourth Proportional to 106,538.40, 159,807.60 and 67,269.60

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Solution

The fourth proportional to 106,538.40, 159,807.60 and 67,269.60 is: 100,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,538.40 : 159,807.60 = 67,269.60 : x
  2. Step 2: Convert to fraction form
    106,538.40/159,807.60 = 67,269.60/x
  3. Step 3: Cross multiply
    106,538.40x = 159,807.60 × 67,269.60
  4. Step 4: Simplify right side
    106,538.40x = 10,750,193,328.96
  5. Step 5: Solve for x
    x = 10,750,193,328.96/106,538.40
  6. Step 6: Final answer
    x = 100,904.40

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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.