Home / 100,669.44-138,924.10-55,352.05

Finding the Fourth Proportional to 100,669.44, 138,924.10 and 55,352.05

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Solution

The fourth proportional to 100,669.44, 138,924.10 and 55,352.05 is: 76,385.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,669.44 : 138,924.10 = 55,352.05 : x
  2. Step 2: Convert to fraction form
    100,669.44/138,924.10 = 55,352.05/x
  3. Step 3: Cross multiply
    100,669.44x = 138,924.10 × 55,352.05
  4. Step 4: Simplify right side
    100,669.44x = 7,689,733,729.41
  5. Step 5: Solve for x
    x = 7,689,733,729.41/100,669.44
  6. Step 6: Final answer
    x = 76,385.98

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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.