Home / 131,039.60-196,559.40-121,416.80

Finding the Fourth Proportional to 131,039.60, 196,559.40 and 121,416.80

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Solution

The fourth proportional to 131,039.60, 196,559.40 and 121,416.80 is: 182,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,039.60 : 196,559.40 = 121,416.80 : x
  2. Step 2: Convert to fraction form
    131,039.60/196,559.40 = 121,416.80/x
  3. Step 3: Cross multiply
    131,039.60x = 196,559.40 × 121,416.80
  4. Step 4: Simplify right side
    131,039.60x = 23,865,613,357.92
  5. Step 5: Solve for x
    x = 23,865,613,357.92/131,039.60
  6. Step 6: Final answer
    x = 182,125.20

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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.