Home / 131,518.60-197,132.10-72,396.70

Finding the Fourth Proportional to 131,518.60, 197,132.10 and 72,396.70

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Solution

The fourth proportional to 131,518.60, 197,132.10 and 72,396.70 is: 108,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,518.60 : 197,132.10 = 72,396.70 : x
  2. Step 2: Convert to fraction form
    131,518.60/197,132.10 = 72,396.70/x
  3. Step 3: Cross multiply
    131,518.60x = 197,132.10 × 72,396.70
  4. Step 4: Simplify right side
    131,518.60x = 14,271,713,504.07
  5. Step 5: Solve for x
    x = 14,271,713,504.07/131,518.60
  6. Step 6: Final answer
    x = 108,514.79

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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.