Home / 105,979.23-159,103.73-68,695.32

Finding the Fourth Proportional to 105,979.23, 159,103.73 and 68,695.32

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Solution

The fourth proportional to 105,979.23, 159,103.73 and 68,695.32 is: 103,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,979.23 : 159,103.73 = 68,695.32 : x
  2. Step 2: Convert to fraction form
    105,979.23/159,103.73 = 68,695.32/x
  3. Step 3: Cross multiply
    105,979.23x = 159,103.73 × 68,695.32
  4. Step 4: Simplify right side
    105,979.23x = 10,929,681,645.54
  5. Step 5: Solve for x
    x = 10,929,681,645.54/105,979.23
  6. Step 6: Final answer
    x = 103,130.41

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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.