Home / 185,011.75-255,318.11-100,130.64

Finding the Fourth Proportional to 185,011.75, 255,318.11 and 100,130.64

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Solution

The fourth proportional to 185,011.75, 255,318.11 and 100,130.64 is: 138,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,011.75 : 255,318.11 = 100,130.64 : x
  2. Step 2: Convert to fraction form
    185,011.75/255,318.11 = 100,130.64/x
  3. Step 3: Cross multiply
    185,011.75x = 255,318.11 × 100,130.64
  4. Step 4: Simplify right side
    185,011.75x = 25,565,165,757.89
  5. Step 5: Solve for x
    x = 25,565,165,757.89/185,011.75
  6. Step 6: Final answer
    x = 138,181.31

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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.