Home / 100,396.24-138,557.72-64,131.06

Finding the Fourth Proportional to 100,396.24, 138,557.72 and 64,131.06

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Solution

The fourth proportional to 100,396.24, 138,557.72 and 64,131.06 is: 88,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.24 : 138,557.72 = 64,131.06 : x
  2. Step 2: Convert to fraction form
    100,396.24/138,557.72 = 64,131.06/x
  3. Step 3: Cross multiply
    100,396.24x = 138,557.72 × 64,131.06
  4. Step 4: Simplify right side
    100,396.24x = 8,885,853,454.78
  5. Step 5: Solve for x
    x = 8,885,853,454.78/100,396.24
  6. Step 6: Final answer
    x = 88,507.83

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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.