Home / 188,119.95-281,742.53-128,633.55

Finding the Fourth Proportional to 188,119.95, 281,742.53 and 128,633.55

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Solution

The fourth proportional to 188,119.95, 281,742.53 and 128,633.55 is: 192,651.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,119.95 : 281,742.53 = 128,633.55 : x
  2. Step 2: Convert to fraction form
    188,119.95/281,742.53 = 128,633.55/x
  3. Step 3: Cross multiply
    188,119.95x = 281,742.53 × 128,633.55
  4. Step 4: Simplify right side
    188,119.95x = 36,241,541,176.71
  5. Step 5: Solve for x
    x = 36,241,541,176.71/188,119.95
  6. Step 6: Final answer
    x = 192,651.24

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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.