Home / 126,638.76-189,887.98-51,811.44

Finding the Fourth Proportional to 126,638.76, 189,887.98 and 51,811.44

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Solution

The fourth proportional to 126,638.76, 189,887.98 and 51,811.44 is: 77,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,638.76 : 189,887.98 = 51,811.44 : x
  2. Step 2: Convert to fraction form
    126,638.76/189,887.98 = 51,811.44/x
  3. Step 3: Cross multiply
    126,638.76x = 189,887.98 × 51,811.44
  4. Step 4: Simplify right side
    126,638.76x = 9,838,369,682.49
  5. Step 5: Solve for x
    x = 9,838,369,682.49/126,638.76
  6. Step 6: Final answer
    x = 77,688.46

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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.