Home / 239,215.12-358,830.88-126,743.20

Finding the Fourth Proportional to 239,215.12, 358,830.88 and 126,743.20

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Solution

The fourth proportional to 239,215.12, 358,830.88 and 126,743.20 is: 190,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,215.12 : 358,830.88 = 126,743.20 : x
  2. Step 2: Convert to fraction form
    239,215.12/358,830.88 = 126,743.20/x
  3. Step 3: Cross multiply
    239,215.12x = 358,830.88 × 126,743.20
  4. Step 4: Simplify right side
    239,215.12x = 45,479,373,990.02
  5. Step 5: Solve for x
    x = 45,479,373,990.02/239,215.12
  6. Step 6: Final answer
    x = 190,119.14

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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.