Home / 100,541.16-150,760.08-53,181.72

Finding the Fourth Proportional to 100,541.16, 150,760.08 and 53,181.72

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Solution

The fourth proportional to 100,541.16, 150,760.08 and 53,181.72 is: 79,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,541.16 : 150,760.08 = 53,181.72 : x
  2. Step 2: Convert to fraction form
    100,541.16/150,760.08 = 53,181.72/x
  3. Step 3: Cross multiply
    100,541.16x = 150,760.08 × 53,181.72
  4. Step 4: Simplify right side
    100,541.16x = 8,017,680,361.74
  5. Step 5: Solve for x
    x = 8,017,680,361.74/100,541.16
  6. Step 6: Final answer
    x = 79,745.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.