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Finding the Fourth Proportional to 126,028.98, 189,043.47 and 72,801.96

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Solution

The fourth proportional to 126,028.98, 189,043.47 and 72,801.96 is: 109,202.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,028.98 : 189,043.47 = 72,801.96 : x
  2. Step 2: Convert to fraction form
    126,028.98/189,043.47 = 72,801.96/x
  3. Step 3: Cross multiply
    126,028.98x = 189,043.47 × 72,801.96
  4. Step 4: Simplify right side
    126,028.98x = 13,762,734,432.29
  5. Step 5: Solve for x
    x = 13,762,734,432.29/126,028.98
  6. Step 6: Final answer
    x = 109,202.93

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1.5x scale

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.