Home / 126,037.36-173,929.74-72,321.20

Finding the Fourth Proportional to 126,037.36, 173,929.74 and 72,321.20

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Solution

The fourth proportional to 126,037.36, 173,929.74 and 72,321.20 is: 99,802.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,037.36 : 173,929.74 = 72,321.20 : x
  2. Step 2: Convert to fraction form
    126,037.36/173,929.74 = 72,321.20/x
  3. Step 3: Cross multiply
    126,037.36x = 173,929.74 × 72,321.20
  4. Step 4: Simplify right side
    126,037.36x = 12,578,807,512.49
  5. Step 5: Solve for x
    x = 12,578,807,512.49/126,037.36
  6. Step 6: Final answer
    x = 99,802.21

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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.