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Finding the Fourth Proportional to 151,978.20, 228,032.10 and 73,051.80

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Solution

The fourth proportional to 151,978.20, 228,032.10 and 73,051.80 is: 109,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,978.20 : 228,032.10 = 73,051.80 : x
  2. Step 2: Convert to fraction form
    151,978.20/228,032.10 = 73,051.80/x
  3. Step 3: Cross multiply
    151,978.20x = 228,032.10 × 73,051.80
  4. Step 4: Simplify right side
    151,978.20x = 16,658,155,362.78
  5. Step 5: Solve for x
    x = 16,658,155,362.78/151,978.20
  6. Step 6: Final answer
    x = 109,608.85

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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.