Home / 155,076.88-214,217.31-121,510.09

Finding the Fourth Proportional to 155,076.88, 214,217.31 and 121,510.09

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Solution

The fourth proportional to 155,076.88, 214,217.31 and 121,510.09 is: 167,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,076.88 : 214,217.31 = 121,510.09 : x
  2. Step 2: Convert to fraction form
    155,076.88/214,217.31 = 121,510.09/x
  3. Step 3: Cross multiply
    155,076.88x = 214,217.31 × 121,510.09
  4. Step 4: Simplify right side
    155,076.88x = 26,029,564,617.66
  5. Step 5: Solve for x
    x = 26,029,564,617.66/155,076.88
  6. Step 6: Final answer
    x = 167,849.42

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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.