Home / 154,224.48-212,802-86,242.80

Finding the Fourth Proportional to 154,224.48, 212,802 and 86,242.80

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Solution

The fourth proportional to 154,224.48, 212,802 and 86,242.80 is: 118,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,224.48 : 212,802 = 86,242.80 : x
  2. Step 2: Convert to fraction form
    154,224.48/212,802 = 86,242.80/x
  3. Step 3: Cross multiply
    154,224.48x = 212,802 × 86,242.80
  4. Step 4: Simplify right side
    154,224.48x = 18,352,640,325.60
  5. Step 5: Solve for x
    x = 18,352,640,325.60/154,224.48
  6. Step 6: Final answer
    x = 118,999.53

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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.