Home / 130,115.78-194,861.82-66,769.28

Finding the Fourth Proportional to 130,115.78, 194,861.82 and 66,769.28

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Solution

The fourth proportional to 130,115.78, 194,861.82 and 66,769.28 is: 99,993.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,115.78 : 194,861.82 = 66,769.28 : x
  2. Step 2: Convert to fraction form
    130,115.78/194,861.82 = 66,769.28/x
  3. Step 3: Cross multiply
    130,115.78x = 194,861.82 × 66,769.28
  4. Step 4: Simplify right side
    130,115.78x = 13,010,783,420.89
  5. Step 5: Solve for x
    x = 13,010,783,420.89/130,115.78
  6. Step 6: Final answer
    x = 99,993.89

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1.5x scale

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.