Home / 137,739.14-206,165.78-71,088.48

Finding the Fourth Proportional to 137,739.14, 206,165.78 and 71,088.48

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Solution

The fourth proportional to 137,739.14, 206,165.78 and 71,088.48 is: 106,404.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,739.14 : 206,165.78 = 71,088.48 : x
  2. Step 2: Convert to fraction form
    137,739.14/206,165.78 = 71,088.48/x
  3. Step 3: Cross multiply
    137,739.14x = 206,165.78 × 71,088.48
  4. Step 4: Simplify right side
    137,739.14x = 14,656,011,928.21
  5. Step 5: Solve for x
    x = 14,656,011,928.21/137,739.14
  6. Step 6: Final answer
    x = 106,404.12

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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.