Home / 100,232.72-138,321.16-54,912.32

Finding the Fourth Proportional to 100,232.72, 138,321.16 and 54,912.32

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Solution

The fourth proportional to 100,232.72, 138,321.16 and 54,912.32 is: 75,779.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,232.72 : 138,321.16 = 54,912.32 : x
  2. Step 2: Convert to fraction form
    100,232.72/138,321.16 = 54,912.32/x
  3. Step 3: Cross multiply
    100,232.72x = 138,321.16 × 54,912.32
  4. Step 4: Simplify right side
    100,232.72x = 7,595,535,800.69
  5. Step 5: Solve for x
    x = 7,595,535,800.69/100,232.72
  6. Step 6: Final answer
    x = 75,779.01

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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.