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Finding the Fourth Proportional to 103,310.80, 154,893.30 and 47,177.80

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Solution

The fourth proportional to 103,310.80, 154,893.30 and 47,177.80 is: 70,733.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,310.80 : 154,893.30 = 47,177.80 : x
  2. Step 2: Convert to fraction form
    103,310.80/154,893.30 = 47,177.80/x
  3. Step 3: Cross multiply
    103,310.80x = 154,893.30 × 47,177.80
  4. Step 4: Simplify right side
    103,310.80x = 7,307,525,128.74
  5. Step 5: Solve for x
    x = 7,307,525,128.74/103,310.80
  6. Step 6: Final answer
    x = 70,733.41

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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.