Home / 121,721.08-167,965.50-68,001.88

Finding the Fourth Proportional to 121,721.08, 167,965.50 and 68,001.88

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Solution

The fourth proportional to 121,721.08, 167,965.50 and 68,001.88 is: 93,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,721.08 : 167,965.50 = 68,001.88 : x
  2. Step 2: Convert to fraction form
    121,721.08/167,965.50 = 68,001.88/x
  3. Step 3: Cross multiply
    121,721.08x = 167,965.50 × 68,001.88
  4. Step 4: Simplify right side
    121,721.08x = 11,421,969,775.14
  5. Step 5: Solve for x
    x = 11,421,969,775.14/121,721.08
  6. Step 6: Final answer
    x = 93,837.24

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1.5x scale

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.