Home / 100,213.98-138,228.84-64,449.24

Finding the Fourth Proportional to 100,213.98, 138,228.84 and 64,449.24

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Solution

The fourth proportional to 100,213.98, 138,228.84 and 64,449.24 is: 88,897.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,213.98 : 138,228.84 = 64,449.24 : x
  2. Step 2: Convert to fraction form
    100,213.98/138,228.84 = 64,449.24/x
  3. Step 3: Cross multiply
    100,213.98x = 138,228.84 × 64,449.24
  4. Step 4: Simplify right side
    100,213.98x = 8,908,743,684.08
  5. Step 5: Solve for x
    x = 8,908,743,684.08/100,213.98
  6. Step 6: Final answer
    x = 88,897.21

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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.