Home / 100,481.42-138,655.66-55,159.24

Finding the Fourth Proportional to 100,481.42, 138,655.66 and 55,159.24

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Solution

The fourth proportional to 100,481.42, 138,655.66 and 55,159.24 is: 76,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,481.42 : 138,655.66 = 55,159.24 : x
  2. Step 2: Convert to fraction form
    100,481.42/138,655.66 = 55,159.24/x
  3. Step 3: Cross multiply
    100,481.42x = 138,655.66 × 55,159.24
  4. Step 4: Simplify right side
    100,481.42x = 7,648,140,827.30
  5. Step 5: Solve for x
    x = 7,648,140,827.30/100,481.42
  6. Step 6: Final answer
    x = 76,114.98

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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.