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Finding the Fourth Proportional to 127,168.92, 175,507.14 and 81,270.90

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Solution

The fourth proportional to 127,168.92, 175,507.14 and 81,270.90 is: 112,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,168.92 : 175,507.14 = 81,270.90 : x
  2. Step 2: Convert to fraction form
    127,168.92/175,507.14 = 81,270.90/x
  3. Step 3: Cross multiply
    127,168.92x = 175,507.14 × 81,270.90
  4. Step 4: Simplify right side
    127,168.92x = 14,263,623,224.23
  5. Step 5: Solve for x
    x = 14,263,623,224.23/127,168.92
  6. Step 6: Final answer
    x = 112,162.81

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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.