Home / 121,500.22-167,669.79-67,785.28

Finding the Fourth Proportional to 121,500.22, 167,669.79 and 67,785.28

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Solution

The fourth proportional to 121,500.22, 167,669.79 and 67,785.28 is: 93,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,500.22 : 167,669.79 = 67,785.28 : x
  2. Step 2: Convert to fraction form
    121,500.22/167,669.79 = 67,785.28/x
  3. Step 3: Cross multiply
    121,500.22x = 167,669.79 × 67,785.28
  4. Step 4: Simplify right side
    121,500.22x = 11,365,543,662.69
  5. Step 5: Solve for x
    x = 11,365,543,662.69/121,500.22
  6. Step 6: Final answer
    x = 93,543.40

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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.