Home / 100,617.06-138,843.42-58,178.34

Finding the Fourth Proportional to 100,617.06, 138,843.42 and 58,178.34

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Solution

The fourth proportional to 100,617.06, 138,843.42 and 58,178.34 is: 80,281.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,617.06 : 138,843.42 = 58,178.34 : x
  2. Step 2: Convert to fraction form
    100,617.06/138,843.42 = 58,178.34/x
  3. Step 3: Cross multiply
    100,617.06x = 138,843.42 × 58,178.34
  4. Step 4: Simplify right side
    100,617.06x = 8,077,679,695.52
  5. Step 5: Solve for x
    x = 8,077,679,695.52/100,617.06
  6. Step 6: Final answer
    x = 80,281.41

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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.