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Finding the Fourth Proportional to 117,195.54, 161,718.27 and 65,503.08

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Solution

The fourth proportional to 117,195.54, 161,718.27 and 65,503.08 is: 90,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,195.54 : 161,718.27 = 65,503.08 : x
  2. Step 2: Convert to fraction form
    117,195.54/161,718.27 = 65,503.08/x
  3. Step 3: Cross multiply
    117,195.54x = 161,718.27 × 65,503.08
  4. Step 4: Simplify right side
    117,195.54x = 10,593,044,777.27
  5. Step 5: Solve for x
    x = 10,593,044,777.27/117,195.54
  6. Step 6: Final answer
    x = 90,387.78

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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.