Home / 76,198.78-105,153.21-42,207.16

Finding the Fourth Proportional to 76,198.78, 105,153.21 and 42,207.16

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Solution

The fourth proportional to 76,198.78, 105,153.21 and 42,207.16 is: 58,245.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,198.78 : 105,153.21 = 42,207.16 : x
  2. Step 2: Convert to fraction form
    76,198.78/105,153.21 = 42,207.16/x
  3. Step 3: Cross multiply
    76,198.78x = 105,153.21 × 42,207.16
  4. Step 4: Simplify right side
    76,198.78x = 4,438,218,293.26
  5. Step 5: Solve for x
    x = 4,438,218,293.26/76,198.78
  6. Step 6: Final answer
    x = 58,245.26

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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.