Home / 171,213.90-256,881.42-76,435.26

Finding the Fourth Proportional to 171,213.90, 256,881.42 and 76,435.26

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Solution

The fourth proportional to 171,213.90, 256,881.42 and 76,435.26 is: 114,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,213.90 : 256,881.42 = 76,435.26 : x
  2. Step 2: Convert to fraction form
    171,213.90/256,881.42 = 76,435.26/x
  3. Step 3: Cross multiply
    171,213.90x = 256,881.42 × 76,435.26
  4. Step 4: Simplify right side
    171,213.90x = 19,634,798,126.87
  5. Step 5: Solve for x
    x = 19,634,798,126.87/171,213.90
  6. Step 6: Final answer
    x = 114,679.93

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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.