Home / 100,856.36-139,200.44-58,414.88

Finding the Fourth Proportional to 100,856.36, 139,200.44 and 58,414.88

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Solution

The fourth proportional to 100,856.36, 139,200.44 and 58,414.88 is: 80,623.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.36 : 139,200.44 = 58,414.88 : x
  2. Step 2: Convert to fraction form
    100,856.36/139,200.44 = 58,414.88/x
  3. Step 3: Cross multiply
    100,856.36x = 139,200.44 × 58,414.88
  4. Step 4: Simplify right side
    100,856.36x = 8,131,376,998.55
  5. Step 5: Solve for x
    x = 8,131,376,998.55/100,856.36
  6. Step 6: Final answer
    x = 80,623.34

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1.5x scale

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.