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Finding the Fourth Proportional to 111,325.28, 153,629.94 and 63,578.28

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Solution

The fourth proportional to 111,325.28, 153,629.94 and 63,578.28 is: 87,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,325.28 : 153,629.94 = 63,578.28 : x
  2. Step 2: Convert to fraction form
    111,325.28/153,629.94 = 63,578.28/x
  3. Step 3: Cross multiply
    111,325.28x = 153,629.94 × 63,578.28
  4. Step 4: Simplify right side
    111,325.28x = 9,767,527,341.70
  5. Step 5: Solve for x
    x = 9,767,527,341.70/111,325.28
  6. Step 6: Final answer
    x = 87,738.63

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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.