Home / 121,739.05-167,979.37-68,024.51

Finding the Fourth Proportional to 121,739.05, 167,979.37 and 68,024.51

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Solution

The fourth proportional to 121,739.05, 167,979.37 and 68,024.51 is: 93,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,739.05 : 167,979.37 = 68,024.51 : x
  2. Step 2: Convert to fraction form
    121,739.05/167,979.37 = 68,024.51/x
  3. Step 3: Cross multiply
    121,739.05x = 167,979.37 × 68,024.51
  4. Step 4: Simplify right side
    121,739.05x = 11,426,714,081.87
  5. Step 5: Solve for x
    x = 11,426,714,081.87/121,739.05
  6. Step 6: Final answer
    x = 93,862.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.