Home / 102,811.60-154,447.80-98,613.20

Finding the Fourth Proportional to 102,811.60, 154,447.80 and 98,613.20

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Solution

The fourth proportional to 102,811.60, 154,447.80 and 98,613.20 is: 148,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,811.60 : 154,447.80 = 98,613.20 : x
  2. Step 2: Convert to fraction form
    102,811.60/154,447.80 = 98,613.20/x
  3. Step 3: Cross multiply
    102,811.60x = 154,447.80 × 98,613.20
  4. Step 4: Simplify right side
    102,811.60x = 15,230,591,790.96
  5. Step 5: Solve for x
    x = 15,230,591,790.96/102,811.60
  6. Step 6: Final answer
    x = 148,140.79

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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.