Home / 131,403.88-197,136.80-42,650.56

Finding the Fourth Proportional to 131,403.88, 197,136.80 and 42,650.56

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Solution

The fourth proportional to 131,403.88, 197,136.80 and 42,650.56 is: 63,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,403.88 : 197,136.80 = 42,650.56 : x
  2. Step 2: Convert to fraction form
    131,403.88/197,136.80 = 42,650.56/x
  3. Step 3: Cross multiply
    131,403.88x = 197,136.80 × 42,650.56
  4. Step 4: Simplify right side
    131,403.88x = 8,407,994,916.61
  5. Step 5: Solve for x
    x = 8,407,994,916.61/131,403.88
  6. Step 6: Final answer
    x = 63,985.90

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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.