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Finding the Fourth Proportional to 103,128.39, 154,694.03 and 29,256.39

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Solution

The fourth proportional to 103,128.39, 154,694.03 and 29,256.39 is: 43,884.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,128.39 : 154,694.03 = 29,256.39 : x
  2. Step 2: Convert to fraction form
    103,128.39/154,694.03 = 29,256.39/x
  3. Step 3: Cross multiply
    103,128.39x = 154,694.03 × 29,256.39
  4. Step 4: Simplify right side
    103,128.39x = 4,525,788,726.07
  5. Step 5: Solve for x
    x = 4,525,788,726.07/103,128.39
  6. Step 6: Final answer
    x = 43,884.99

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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.