Home / 100,155.57-138,216.33-54,832.80

Finding the Fourth Proportional to 100,155.57, 138,216.33 and 54,832.80

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Solution

The fourth proportional to 100,155.57, 138,216.33 and 54,832.80 is: 75,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,155.57 : 138,216.33 = 54,832.80 : x
  2. Step 2: Convert to fraction form
    100,155.57/138,216.33 = 54,832.80/x
  3. Step 3: Cross multiply
    100,155.57x = 138,216.33 × 54,832.80
  4. Step 4: Simplify right side
    100,155.57x = 7,578,788,379.62
  5. Step 5: Solve for x
    x = 7,578,788,379.62/100,155.57
  6. Step 6: Final answer
    x = 75,670.16

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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.