Home / 121,566.30-167,837.31-78,568.26

Finding the Fourth Proportional to 121,566.30, 167,837.31 and 78,568.26

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Solution

The fourth proportional to 121,566.30, 167,837.31 and 78,568.26 is: 108,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,566.30 : 167,837.31 = 78,568.26 : x
  2. Step 2: Convert to fraction form
    121,566.30/167,837.31 = 78,568.26/x
  3. Step 3: Cross multiply
    121,566.30x = 167,837.31 × 78,568.26
  4. Step 4: Simplify right side
    121,566.30x = 13,186,685,409.78
  5. Step 5: Solve for x
    x = 13,186,685,409.78/121,566.30
  6. Step 6: Final answer
    x = 108,473.20

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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.