Home / 131,478.60-197,072.10-72,356.70

Finding the Fourth Proportional to 131,478.60, 197,072.10 and 72,356.70

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Solution

The fourth proportional to 131,478.60, 197,072.10 and 72,356.70 is: 108,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,478.60 : 197,072.10 = 72,356.70 : x
  2. Step 2: Convert to fraction form
    131,478.60/197,072.10 = 72,356.70/x
  3. Step 3: Cross multiply
    131,478.60x = 197,072.10 × 72,356.70
  4. Step 4: Simplify right side
    131,478.60x = 14,259,486,818.07
  5. Step 5: Solve for x
    x = 14,259,486,818.07/131,478.60
  6. Step 6: Final answer
    x = 108,454.81

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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.