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Finding the Fourth Proportional to 137,479.87, 206,244.29 and 70,902.01

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Solution

The fourth proportional to 137,479.87, 206,244.29 and 70,902.01 is: 106,365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,479.87 : 206,244.29 = 70,902.01 : x
  2. Step 2: Convert to fraction form
    137,479.87/206,244.29 = 70,902.01/x
  3. Step 3: Cross multiply
    137,479.87x = 206,244.29 × 70,902.01
  4. Step 4: Simplify right side
    137,479.87x = 14,623,134,712.02
  5. Step 5: Solve for x
    x = 14,623,134,712.02/137,479.87
  6. Step 6: Final answer
    x = 106,365.64

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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.