Home / 100,896.08-139,236.56-58,479.20

Finding the Fourth Proportional to 100,896.08, 139,236.56 and 58,479.20

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Solution

The fourth proportional to 100,896.08, 139,236.56 and 58,479.20 is: 80,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,896.08 : 139,236.56 = 58,479.20 : x
  2. Step 2: Convert to fraction form
    100,896.08/139,236.56 = 58,479.20/x
  3. Step 3: Cross multiply
    100,896.08x = 139,236.56 × 58,479.20
  4. Step 4: Simplify right side
    100,896.08x = 8,142,442,639.55
  5. Step 5: Solve for x
    x = 8,142,442,639.55/100,896.08
  6. Step 6: Final answer
    x = 80,701.28

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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.