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Finding the Fourth Proportional to 156,793.90, 235,190.85 and 45,985.90

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Solution

The fourth proportional to 156,793.90, 235,190.85 and 45,985.90 is: 68,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,793.90 : 235,190.85 = 45,985.90 : x
  2. Step 2: Convert to fraction form
    156,793.90/235,190.85 = 45,985.90/x
  3. Step 3: Cross multiply
    156,793.90x = 235,190.85 × 45,985.90
  4. Step 4: Simplify right side
    156,793.90x = 10,815,462,909.02
  5. Step 5: Solve for x
    x = 10,815,462,909.02/156,793.90
  6. Step 6: Final answer
    x = 68,978.85

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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.