Home / 138,056.13-206,813.57-71,539.92

Finding the Fourth Proportional to 138,056.13, 206,813.57 and 71,539.92

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Solution

The fourth proportional to 138,056.13, 206,813.57 and 71,539.92 is: 107,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,056.13 : 206,813.57 = 71,539.92 : x
  2. Step 2: Convert to fraction form
    138,056.13/206,813.57 = 71,539.92/x
  3. Step 3: Cross multiply
    138,056.13x = 206,813.57 × 71,539.92
  4. Step 4: Simplify right side
    138,056.13x = 14,795,425,895.01
  5. Step 5: Solve for x
    x = 14,795,425,895.01/138,056.13
  6. Step 6: Final answer
    x = 107,169.64

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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.