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Finding the Fourth Proportional to 116,489.88, 160,755.12 and 66,188.88

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Solution

The fourth proportional to 116,489.88, 160,755.12 and 66,188.88 is: 91,340.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,489.88 : 160,755.12 = 66,188.88 : x
  2. Step 2: Convert to fraction form
    116,489.88/160,755.12 = 66,188.88/x
  3. Step 3: Cross multiply
    116,489.88x = 160,755.12 × 66,188.88
  4. Step 4: Simplify right side
    116,489.88x = 10,640,201,347.07
  5. Step 5: Solve for x
    x = 10,640,201,347.07/116,489.88
  6. Step 6: Final answer
    x = 91,340.13

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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.