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Finding the Fourth Proportional to 126,039.76, 189,059.64 and 118,341.52

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Solution

The fourth proportional to 126,039.76, 189,059.64 and 118,341.52 is: 177,512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,039.76 : 189,059.64 = 118,341.52 : x
  2. Step 2: Convert to fraction form
    126,039.76/189,059.64 = 118,341.52/x
  3. Step 3: Cross multiply
    126,039.76x = 189,059.64 × 118,341.52
  4. Step 4: Simplify right side
    126,039.76x = 22,373,605,168.25
  5. Step 5: Solve for x
    x = 22,373,605,168.25/126,039.76
  6. Step 6: Final answer
    x = 177,512.28

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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.