Home / 100,959.12-139,311.48-57,936.24

Finding the Fourth Proportional to 100,959.12, 139,311.48 and 57,936.24

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Solution

The fourth proportional to 100,959.12, 139,311.48 and 57,936.24 is: 79,945.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,959.12 : 139,311.48 = 57,936.24 : x
  2. Step 2: Convert to fraction form
    100,959.12/139,311.48 = 57,936.24/x
  3. Step 3: Cross multiply
    100,959.12x = 139,311.48 × 57,936.24
  4. Step 4: Simplify right side
    100,959.12x = 8,071,183,340.04
  5. Step 5: Solve for x
    x = 8,071,183,340.04/100,959.12
  6. Step 6: Final answer
    x = 79,945.06

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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.