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Finding the Fourth Proportional to 102,903.69, 154,383.25 and 52,956.57

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Solution

The fourth proportional to 102,903.69, 154,383.25 and 52,956.57 is: 79,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,903.69 : 154,383.25 = 52,956.57 : x
  2. Step 2: Convert to fraction form
    102,903.69/154,383.25 = 52,956.57/x
  3. Step 3: Cross multiply
    102,903.69x = 154,383.25 × 52,956.57
  4. Step 4: Simplify right side
    102,903.69x = 8,175,607,385.45
  5. Step 5: Solve for x
    x = 8,175,607,385.45/102,903.69
  6. Step 6: Final answer
    x = 79,449.12

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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.