Home / 100,896.32-139,236.92-58,479.46

Finding the Fourth Proportional to 100,896.32, 139,236.92 and 58,479.46

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Solution

The fourth proportional to 100,896.32, 139,236.92 and 58,479.46 is: 80,701.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,896.32 : 139,236.92 = 58,479.46 : x
  2. Step 2: Convert to fraction form
    100,896.32/139,236.92 = 58,479.46/x
  3. Step 3: Cross multiply
    100,896.32x = 139,236.92 × 58,479.46
  4. Step 4: Simplify right side
    100,896.32x = 8,142,499,893.66
  5. Step 5: Solve for x
    x = 8,142,499,893.66/100,896.32
  6. Step 6: Final answer
    x = 80,701.65

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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.