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Finding the Fourth Proportional to 126,133.80, 189,128.70 and 47,250.60

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Solution

The fourth proportional to 126,133.80, 189,128.70 and 47,250.60 is: 70,848.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,133.80 : 189,128.70 = 47,250.60 : x
  2. Step 2: Convert to fraction form
    126,133.80/189,128.70 = 47,250.60/x
  3. Step 3: Cross multiply
    126,133.80x = 189,128.70 × 47,250.60
  4. Step 4: Simplify right side
    126,133.80x = 8,936,444,552.22
  5. Step 5: Solve for x
    x = 8,936,444,552.22/126,133.80
  6. Step 6: Final answer
    x = 70,848.93

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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.