Home / 245,596.56-338,909.40-138,171.12

Finding the Fourth Proportional to 245,596.56, 338,909.40 and 138,171.12

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Solution

The fourth proportional to 245,596.56, 338,909.40 and 138,171.12 is: 190,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,596.56 : 338,909.40 = 138,171.12 : x
  2. Step 2: Convert to fraction form
    245,596.56/338,909.40 = 138,171.12/x
  3. Step 3: Cross multiply
    245,596.56x = 338,909.40 × 138,171.12
  4. Step 4: Simplify right side
    245,596.56x = 46,827,491,376.53
  5. Step 5: Solve for x
    x = 46,827,491,376.53/245,596.56
  6. Step 6: Final answer
    x = 190,668.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.