Home / 100,496.41-138,688.94-55,176.30

Finding the Fourth Proportional to 100,496.41, 138,688.94 and 55,176.30

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Solution

The fourth proportional to 100,496.41, 138,688.94 and 55,176.30 is: 76,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,496.41 : 138,688.94 = 55,176.30 : x
  2. Step 2: Convert to fraction form
    100,496.41/138,688.94 = 55,176.30/x
  3. Step 3: Cross multiply
    100,496.41x = 138,688.94 × 55,176.30
  4. Step 4: Simplify right side
    100,496.41x = 7,652,342,698.06
  5. Step 5: Solve for x
    x = 7,652,342,698.06/100,496.41
  6. Step 6: Final answer
    x = 76,145.44

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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.