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Finding the Fourth Proportional to 114,785.70, 172,222.28 and 103,653.87

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Solution

The fourth proportional to 114,785.70, 172,222.28 and 103,653.87 is: 155,520.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,785.70 : 172,222.28 = 103,653.87 : x
  2. Step 2: Convert to fraction form
    114,785.70/172,222.28 = 103,653.87/x
  3. Step 3: Cross multiply
    114,785.70x = 172,222.28 × 103,653.87
  4. Step 4: Simplify right side
    114,785.70x = 17,851,505,822.22
  5. Step 5: Solve for x
    x = 17,851,505,822.22/114,785.70
  6. Step 6: Final answer
    x = 155,520.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.