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Finding the Fourth Proportional to 126,291.52, 189,447.52 and 42,048.64

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Solution

The fourth proportional to 126,291.52, 189,447.52 and 42,048.64 is: 63,076.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,291.52 : 189,447.52 = 42,048.64 : x
  2. Step 2: Convert to fraction form
    126,291.52/189,447.52 = 42,048.64/x
  3. Step 3: Cross multiply
    126,291.52x = 189,447.52 × 42,048.64
  4. Step 4: Simplify right side
    126,291.52x = 7,966,010,567.37
  5. Step 5: Solve for x
    x = 7,966,010,567.37/126,291.52
  6. Step 6: Final answer
    x = 63,076.37

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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.