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Finding the Fourth Proportional to 114,704.87, 158,287.37 and 63,720.90

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Solution

The fourth proportional to 114,704.87, 158,287.37 and 63,720.90 is: 87,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,704.87 : 158,287.37 = 63,720.90 : x
  2. Step 2: Convert to fraction form
    114,704.87/158,287.37 = 63,720.90/x
  3. Step 3: Cross multiply
    114,704.87x = 158,287.37 × 63,720.90
  4. Step 4: Simplify right side
    114,704.87x = 10,086,213,356.43
  5. Step 5: Solve for x
    x = 10,086,213,356.43/114,704.87
  6. Step 6: Final answer
    x = 87,931.87

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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.