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Finding the Fourth Proportional to 142,669.60, 214,234.80 and 107,648.80

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Solution

The fourth proportional to 142,669.60, 214,234.80 and 107,648.80 is: 161,647.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,669.60 : 214,234.80 = 107,648.80 : x
  2. Step 2: Convert to fraction form
    142,669.60/214,234.80 = 107,648.80/x
  3. Step 3: Cross multiply
    142,669.60x = 214,234.80 × 107,648.80
  4. Step 4: Simplify right side
    142,669.60x = 23,062,119,138.24
  5. Step 5: Solve for x
    x = 23,062,119,138.24/142,669.60
  6. Step 6: Final answer
    x = 161,647.04

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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.