Home / 113,121.38-156,090.12-65,365.46

Finding the Fourth Proportional to 113,121.38, 156,090.12 and 65,365.46

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Solution

The fourth proportional to 113,121.38, 156,090.12 and 65,365.46 is: 90,194.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,121.38 : 156,090.12 = 65,365.46 : x
  2. Step 2: Convert to fraction form
    113,121.38/156,090.12 = 65,365.46/x
  3. Step 3: Cross multiply
    113,121.38x = 156,090.12 × 65,365.46
  4. Step 4: Simplify right side
    113,121.38x = 10,202,902,495.26
  5. Step 5: Solve for x
    x = 10,202,902,495.26/113,121.38
  6. Step 6: Final answer
    x = 90,194.29

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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.