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Finding the Fourth Proportional to 128,511, 192,537.54 and 109,599.17

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Solution

The fourth proportional to 128,511, 192,537.54 and 109,599.17 is: 164,203.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,511 : 192,537.54 = 109,599.17 : x
  2. Step 2: Convert to fraction form
    128,511/192,537.54 = 109,599.17/x
  3. Step 3: Cross multiply
    128,511x = 192,537.54 × 109,599.17
  4. Step 4: Simplify right side
    128,511x = 21,101,953,615.15
  5. Step 5: Solve for x
    x = 21,101,953,615.15/128,511
  6. Step 6: Final answer
    x = 164,203.48

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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.