Home / 81,173.90-121,772.95-25,009.31

Finding the Fourth Proportional to 81,173.90, 121,772.95 and 25,009.31

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Solution

The fourth proportional to 81,173.90, 121,772.95 and 25,009.31 is: 37,517.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,173.90 : 121,772.95 = 25,009.31 : x
  2. Step 2: Convert to fraction form
    81,173.90/121,772.95 = 25,009.31/x
  3. Step 3: Cross multiply
    81,173.90x = 121,772.95 × 25,009.31
  4. Step 4: Simplify right side
    81,173.90x = 3,045,457,456.16
  5. Step 5: Solve for x
    x = 3,045,457,456.16/81,173.90
  6. Step 6: Final answer
    x = 37,517.69

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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.