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Finding the Fourth Proportional to 129,610.34, 178,912.42 and 101,325.14

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Solution

The fourth proportional to 129,610.34, 178,912.42 and 101,325.14 is: 139,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,610.34 : 178,912.42 = 101,325.14 : x
  2. Step 2: Convert to fraction form
    129,610.34/178,912.42 = 101,325.14/x
  3. Step 3: Cross multiply
    129,610.34x = 178,912.42 × 101,325.14
  4. Step 4: Simplify right side
    129,610.34x = 18,128,325,109.68
  5. Step 5: Solve for x
    x = 18,128,325,109.68/129,610.34
  6. Step 6: Final answer
    x = 139,867.90

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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.