Home / 121,209.49-167,268.67-67,495.15

Finding the Fourth Proportional to 121,209.49, 167,268.67 and 67,495.15

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Solution

The fourth proportional to 121,209.49, 167,268.67 and 67,495.15 is: 93,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,209.49 : 167,268.67 = 67,495.15 : x
  2. Step 2: Convert to fraction form
    121,209.49/167,268.67 = 67,495.15/x
  3. Step 3: Cross multiply
    121,209.49x = 167,268.67 × 67,495.15
  4. Step 4: Simplify right side
    121,209.49x = 11,289,823,971.95
  5. Step 5: Solve for x
    x = 11,289,823,971.95/121,209.49
  6. Step 6: Final answer
    x = 93,143.07

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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.