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Finding the Fourth Proportional to 121,203, 167,256.77 and 67,487.99

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Solution

The fourth proportional to 121,203, 167,256.77 and 67,487.99 is: 93,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,203 : 167,256.77 = 67,487.99 : x
  2. Step 2: Convert to fraction form
    121,203/167,256.77 = 67,487.99/x
  3. Step 3: Cross multiply
    121,203x = 167,256.77 × 67,487.99
  4. Step 4: Simplify right side
    121,203x = 11,287,822,047.47
  5. Step 5: Solve for x
    x = 11,287,822,047.47/121,203
  6. Step 6: Final answer
    x = 93,131.54

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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.