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Finding the Fourth Proportional to 117,116.35, 161,605.80 and 66,122.80

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Solution

The fourth proportional to 117,116.35, 161,605.80 and 66,122.80 is: 91,241.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,116.35 : 161,605.80 = 66,122.80 : x
  2. Step 2: Convert to fraction form
    117,116.35/161,605.80 = 66,122.80/x
  3. Step 3: Cross multiply
    117,116.35x = 161,605.80 × 66,122.80
  4. Step 4: Simplify right side
    117,116.35x = 10,685,827,588.23
  5. Step 5: Solve for x
    x = 10,685,827,588.23/117,116.35
  6. Step 6: Final answer
    x = 91,241.13

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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.