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Finding the Fourth Proportional to 126,551.39, 174,635.39 and 72,838.13

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Solution

The fourth proportional to 126,551.39, 174,635.39 and 72,838.13 is: 100,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,551.39 : 174,635.39 = 72,838.13 : x
  2. Step 2: Convert to fraction form
    126,551.39/174,635.39 = 72,838.13/x
  3. Step 3: Cross multiply
    126,551.39x = 174,635.39 × 72,838.13
  4. Step 4: Simplify right side
    126,551.39x = 12,720,114,875.23
  5. Step 5: Solve for x
    x = 12,720,114,875.23/126,551.39
  6. Step 6: Final answer
    x = 100,513.43

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1.5x scale

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.