Home / 123,680.64-185,521.44-30,186.42

Finding the Fourth Proportional to 123,680.64, 185,521.44 and 30,186.42

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Solution

The fourth proportional to 123,680.64, 185,521.44 and 30,186.42 is: 45,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,680.64 : 185,521.44 = 30,186.42 : x
  2. Step 2: Convert to fraction form
    123,680.64/185,521.44 = 30,186.42/x
  3. Step 3: Cross multiply
    123,680.64x = 185,521.44 × 30,186.42
  4. Step 4: Simplify right side
    123,680.64x = 5,600,228,106.84
  5. Step 5: Solve for x
    x = 5,600,228,106.84/123,680.64
  6. Step 6: Final answer
    x = 45,279.75

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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.