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Finding the Fourth Proportional to 142,650.80, 213,978.62 and 53,946.08

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Solution

The fourth proportional to 142,650.80, 213,978.62 and 53,946.08 is: 80,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,650.80 : 213,978.62 = 53,946.08 : x
  2. Step 2: Convert to fraction form
    142,650.80/213,978.62 = 53,946.08/x
  3. Step 3: Cross multiply
    142,650.80x = 213,978.62 × 53,946.08
  4. Step 4: Simplify right side
    142,650.80x = 11,543,306,817.78
  5. Step 5: Solve for x
    x = 11,543,306,817.78/142,650.80
  6. Step 6: Final answer
    x = 80,920.03

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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.