Home / 253,042.08-379,266.72-103,188.80

Finding the Fourth Proportional to 253,042.08, 379,266.72 and 103,188.80

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Solution

The fourth proportional to 253,042.08, 379,266.72 and 103,188.80 is: 154,662.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,042.08 : 379,266.72 = 103,188.80 : x
  2. Step 2: Convert to fraction form
    253,042.08/379,266.72 = 103,188.80/x
  3. Step 3: Cross multiply
    253,042.08x = 379,266.72 × 103,188.80
  4. Step 4: Simplify right side
    253,042.08x = 39,136,077,716.74
  5. Step 5: Solve for x
    x = 39,136,077,716.74/253,042.08
  6. Step 6: Final answer
    x = 154,662.33

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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.