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Finding the Fourth Proportional to 113,531.26, 156,673.16 and 65,812.29

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Solution

The fourth proportional to 113,531.26, 156,673.16 and 65,812.29 is: 90,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,531.26 : 156,673.16 = 65,812.29 : x
  2. Step 2: Convert to fraction form
    113,531.26/156,673.16 = 65,812.29/x
  3. Step 3: Cross multiply
    113,531.26x = 156,673.16 × 65,812.29
  4. Step 4: Simplify right side
    113,531.26x = 10,311,019,441.14
  5. Step 5: Solve for x
    x = 10,311,019,441.14/113,531.26
  6. Step 6: Final answer
    x = 90,820.97

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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.