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Finding the Fourth Proportional to 114,509.43, 158,015.03 and 66,113.28

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Solution

The fourth proportional to 114,509.43, 158,015.03 and 66,113.28 is: 91,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,509.43 : 158,015.03 = 66,113.28 : x
  2. Step 2: Convert to fraction form
    114,509.43/158,015.03 = 66,113.28/x
  3. Step 3: Cross multiply
    114,509.43x = 158,015.03 × 66,113.28
  4. Step 4: Simplify right side
    114,509.43x = 10,446,891,592.03
  5. Step 5: Solve for x
    x = 10,446,891,592.03/114,509.43
  6. Step 6: Final answer
    x = 91,231.71

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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.