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Finding the Fourth Proportional to 137,683.40, 206,265.90 and 70,896.20

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Solution

The fourth proportional to 137,683.40, 206,265.90 and 70,896.20 is: 106,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,683.40 : 206,265.90 = 70,896.20 : x
  2. Step 2: Convert to fraction form
    137,683.40/206,265.90 = 70,896.20/x
  3. Step 3: Cross multiply
    137,683.40x = 206,265.90 × 70,896.20
  4. Step 4: Simplify right side
    137,683.40x = 14,623,468,499.58
  5. Step 5: Solve for x
    x = 14,623,468,499.58/137,683.40
  6. Step 6: Final answer
    x = 106,210.83

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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.