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Finding the Fourth Proportional to 168,168.62, 231,929.91 and 142,102.31

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Solution

The fourth proportional to 168,168.62, 231,929.91 and 142,102.31 is: 195,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,168.62 : 231,929.91 = 142,102.31 : x
  2. Step 2: Convert to fraction form
    168,168.62/231,929.91 = 142,102.31/x
  3. Step 3: Cross multiply
    168,168.62x = 231,929.91 × 142,102.31
  4. Step 4: Simplify right side
    168,168.62x = 32,957,774,809.44
  5. Step 5: Solve for x
    x = 32,957,774,809.44/168,168.62
  6. Step 6: Final answer
    x = 195,980.53

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1.5x scale

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.