Home / 131,528.60-197,147.10-72,406.70

Finding the Fourth Proportional to 131,528.60, 197,147.10 and 72,406.70

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Solution

The fourth proportional to 131,528.60, 197,147.10 and 72,406.70 is: 108,529.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,528.60 : 197,147.10 = 72,406.70 : x
  2. Step 2: Convert to fraction form
    131,528.60/197,147.10 = 72,406.70/x
  3. Step 3: Cross multiply
    131,528.60x = 197,147.10 × 72,406.70
  4. Step 4: Simplify right side
    131,528.60x = 14,274,770,925.57
  5. Step 5: Solve for x
    x = 14,274,770,925.57/131,528.60
  6. Step 6: Final answer
    x = 108,529.79

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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.