Home / 127,971.36-176,586.48-90,180

Finding the Fourth Proportional to 127,971.36, 176,586.48 and 90,180

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Solution

The fourth proportional to 127,971.36, 176,586.48 and 90,180 is: 124,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,971.36 : 176,586.48 = 90,180 : x
  2. Step 2: Convert to fraction form
    127,971.36/176,586.48 = 90,180/x
  3. Step 3: Cross multiply
    127,971.36x = 176,586.48 × 90,180
  4. Step 4: Simplify right side
    127,971.36x = 15,924,568,766.40
  5. Step 5: Solve for x
    x = 15,924,568,766.40/127,971.36
  6. Step 6: Final answer
    x = 124,438.54

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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.