Home / 121,964.56-168,290.80-71,673.28

Finding the Fourth Proportional to 121,964.56, 168,290.80 and 71,673.28

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Solution

The fourth proportional to 121,964.56, 168,290.80 and 71,673.28 is: 98,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,964.56 : 168,290.80 = 71,673.28 : x
  2. Step 2: Convert to fraction form
    121,964.56/168,290.80 = 71,673.28/x
  3. Step 3: Cross multiply
    121,964.56x = 168,290.80 × 71,673.28
  4. Step 4: Simplify right side
    121,964.56x = 12,061,953,629.82
  5. Step 5: Solve for x
    x = 12,061,953,629.82/121,964.56
  6. Step 6: Final answer
    x = 98,897.20

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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.