Home / 145,615.80-218,423.70-115,872.60

Finding the Fourth Proportional to 145,615.80, 218,423.70 and 115,872.60

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Solution

The fourth proportional to 145,615.80, 218,423.70 and 115,872.60 is: 173,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,615.80 : 218,423.70 = 115,872.60 : x
  2. Step 2: Convert to fraction form
    145,615.80/218,423.70 = 115,872.60/x
  3. Step 3: Cross multiply
    145,615.80x = 218,423.70 × 115,872.60
  4. Step 4: Simplify right side
    145,615.80x = 25,309,322,020.62
  5. Step 5: Solve for x
    x = 25,309,322,020.62/145,615.80
  6. Step 6: Final answer
    x = 173,808.90

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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.