Home / 113,147.36-156,126-65,391.49

Finding the Fourth Proportional to 113,147.36, 156,126 and 65,391.49

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Solution

The fourth proportional to 113,147.36, 156,126 and 65,391.49 is: 90,230.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,147.36 : 156,126 = 65,391.49 : x
  2. Step 2: Convert to fraction form
    113,147.36/156,126 = 65,391.49/x
  3. Step 3: Cross multiply
    113,147.36x = 156,126 × 65,391.49
  4. Step 4: Simplify right side
    113,147.36x = 10,209,311,767.74
  5. Step 5: Solve for x
    x = 10,209,311,767.74/113,147.36
  6. Step 6: Final answer
    x = 90,230.23

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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.