Home / 137,979.23-206,928.87-53,720.60

Finding the Fourth Proportional to 137,979.23, 206,928.87 and 53,720.60

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Solution

The fourth proportional to 137,979.23, 206,928.87 and 53,720.60 is: 80,565.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,979.23 : 206,928.87 = 53,720.60 : x
  2. Step 2: Convert to fraction form
    137,979.23/206,928.87 = 53,720.60/x
  3. Step 3: Cross multiply
    137,979.23x = 206,928.87 × 53,720.60
  4. Step 4: Simplify right side
    137,979.23x = 11,116,343,053.72
  5. Step 5: Solve for x
    x = 11,116,343,053.72/137,979.23
  6. Step 6: Final answer
    x = 80,565.34

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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.