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Finding the Fourth Proportional to 102,553.70, 153,744.15 and 53,305.70

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Solution

The fourth proportional to 102,553.70, 153,744.15 and 53,305.70 is: 79,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,553.70 : 153,744.15 = 53,305.70 : x
  2. Step 2: Convert to fraction form
    102,553.70/153,744.15 = 53,305.70/x
  3. Step 3: Cross multiply
    102,553.70x = 153,744.15 × 53,305.70
  4. Step 4: Simplify right side
    102,553.70x = 8,195,439,536.66
  5. Step 5: Solve for x
    x = 8,195,439,536.66/102,553.70
  6. Step 6: Final answer
    x = 79,913.64

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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.