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Finding the Fourth Proportional to 137,887, 206,734.02 and 70,439.92

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Solution

The fourth proportional to 137,887, 206,734.02 and 70,439.92 is: 105,610.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,887 : 206,734.02 = 70,439.92 : x
  2. Step 2: Convert to fraction form
    137,887/206,734.02 = 70,439.92/x
  3. Step 3: Cross multiply
    137,887x = 206,734.02 × 70,439.92
  4. Step 4: Simplify right side
    137,887x = 14,562,327,830.08
  5. Step 5: Solve for x
    x = 14,562,327,830.08/137,887
  6. Step 6: Final answer
    x = 105,610.59

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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.