Home / 148,212.48-204,532.80-81,144

Finding the Fourth Proportional to 148,212.48, 204,532.80 and 81,144

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Solution

The fourth proportional to 148,212.48, 204,532.80 and 81,144 is: 111,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,212.48 : 204,532.80 = 81,144 : x
  2. Step 2: Convert to fraction form
    148,212.48/204,532.80 = 81,144/x
  3. Step 3: Cross multiply
    148,212.48x = 204,532.80 × 81,144
  4. Step 4: Simplify right side
    148,212.48x = 16,596,609,523.20
  5. Step 5: Solve for x
    x = 16,596,609,523.20/148,212.48
  6. Step 6: Final answer
    x = 111,978.49

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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.