Home / 126,018.24-173,903.81-72,311.70

Finding the Fourth Proportional to 126,018.24, 173,903.81 and 72,311.70

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Solution

The fourth proportional to 126,018.24, 173,903.81 and 72,311.70 is: 99,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,018.24 : 173,903.81 = 72,311.70 : x
  2. Step 2: Convert to fraction form
    126,018.24/173,903.81 = 72,311.70/x
  3. Step 3: Cross multiply
    126,018.24x = 173,903.81 × 72,311.70
  4. Step 4: Simplify right side
    126,018.24x = 12,575,280,137.58
  5. Step 5: Solve for x
    x = 12,575,280,137.58/126,018.24
  6. Step 6: Final answer
    x = 99,789.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.