Home / 121,651.14-167,871.60-72,648.06

Finding the Fourth Proportional to 121,651.14, 167,871.60 and 72,648.06

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Solution

The fourth proportional to 121,651.14, 167,871.60 and 72,648.06 is: 100,250.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,651.14 : 167,871.60 = 72,648.06 : x
  2. Step 2: Convert to fraction form
    121,651.14/167,871.60 = 72,648.06/x
  3. Step 3: Cross multiply
    121,651.14x = 167,871.60 × 72,648.06
  4. Step 4: Simplify right side
    121,651.14x = 12,195,546,069.10
  5. Step 5: Solve for x
    x = 12,195,546,069.10/121,651.14
  6. Step 6: Final answer
    x = 100,250.16

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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.