Home / 131,405.60-197,108.40-48,288.80

Finding the Fourth Proportional to 131,405.60, 197,108.40 and 48,288.80

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Solution

The fourth proportional to 131,405.60, 197,108.40 and 48,288.80 is: 72,433.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,405.60 : 197,108.40 = 48,288.80 : x
  2. Step 2: Convert to fraction form
    131,405.60/197,108.40 = 48,288.80/x
  3. Step 3: Cross multiply
    131,405.60x = 197,108.40 × 48,288.80
  4. Step 4: Simplify right side
    131,405.60x = 9,518,128,105.92
  5. Step 5: Solve for x
    x = 9,518,128,105.92/131,405.60
  6. Step 6: Final answer
    x = 72,433.20

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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.