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Finding the Fourth Proportional to 129,776.65, 194,663.80 and 41,030.18

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Solution

The fourth proportional to 129,776.65, 194,663.80 and 41,030.18 is: 61,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,776.65 : 194,663.80 = 41,030.18 : x
  2. Step 2: Convert to fraction form
    129,776.65/194,663.80 = 41,030.18/x
  3. Step 3: Cross multiply
    129,776.65x = 194,663.80 × 41,030.18
  4. Step 4: Simplify right side
    129,776.65x = 7,987,090,548.33
  5. Step 5: Solve for x
    x = 7,987,090,548.33/129,776.65
  6. Step 6: Final answer
    x = 61,544.90

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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.