Home / 131,389.20-197,112.60-42,627.60

Finding the Fourth Proportional to 131,389.20, 197,112.60 and 42,627.60

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Solution

The fourth proportional to 131,389.20, 197,112.60 and 42,627.60 is: 63,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,389.20 : 197,112.60 = 42,627.60 : x
  2. Step 2: Convert to fraction form
    131,389.20/197,112.60 = 42,627.60/x
  3. Step 3: Cross multiply
    131,389.20x = 197,112.60 × 42,627.60
  4. Step 4: Simplify right side
    131,389.20x = 8,402,437,067.76
  5. Step 5: Solve for x
    x = 8,402,437,067.76/131,389.20
  6. Step 6: Final answer
    x = 63,950.74

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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.