Home / 126,734.90-174,878.70-100,959.10

Finding the Fourth Proportional to 126,734.90, 174,878.70 and 100,959.10

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Solution

The fourth proportional to 126,734.90, 174,878.70 and 100,959.10 is: 139,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,734.90 : 174,878.70 = 100,959.10 : x
  2. Step 2: Convert to fraction form
    126,734.90/174,878.70 = 100,959.10/x
  3. Step 3: Cross multiply
    126,734.90x = 174,878.70 × 100,959.10
  4. Step 4: Simplify right side
    126,734.90x = 17,655,596,161.17
  5. Step 5: Solve for x
    x = 17,655,596,161.17/126,734.90
  6. Step 6: Final answer
    x = 139,311.24

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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.