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Finding the Fourth Proportional to 126,551.89, 174,636.08 and 72,838.63

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Solution

The fourth proportional to 126,551.89, 174,636.08 and 72,838.63 is: 100,514.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,551.89 : 174,636.08 = 72,838.63 : x
  2. Step 2: Convert to fraction form
    126,551.89/174,636.08 = 72,838.63/x
  3. Step 3: Cross multiply
    126,551.89x = 174,636.08 × 72,838.63
  4. Step 4: Simplify right side
    126,551.89x = 12,720,252,451.58
  5. Step 5: Solve for x
    x = 12,720,252,451.58/126,551.89
  6. Step 6: Final answer
    x = 100,514.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.