Home / 105,769.20-158,740.20-102,313.20

Finding the Fourth Proportional to 105,769.20, 158,740.20 and 102,313.20

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Solution

The fourth proportional to 105,769.20, 158,740.20 and 102,313.20 is: 153,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,769.20 : 158,740.20 = 102,313.20 : x
  2. Step 2: Convert to fraction form
    105,769.20/158,740.20 = 102,313.20/x
  3. Step 3: Cross multiply
    105,769.20x = 158,740.20 × 102,313.20
  4. Step 4: Simplify right side
    105,769.20x = 16,241,217,830.64
  5. Step 5: Solve for x
    x = 16,241,217,830.64/105,769.20
  6. Step 6: Final answer
    x = 153,553.38

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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.