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Finding the Fourth Proportional to 139,524.88, 209,301 and 55,281.64

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Solution

The fourth proportional to 139,524.88, 209,301 and 55,281.64 is: 82,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,524.88 : 209,301 = 55,281.64 : x
  2. Step 2: Convert to fraction form
    139,524.88/209,301 = 55,281.64/x
  3. Step 3: Cross multiply
    139,524.88x = 209,301 × 55,281.64
  4. Step 4: Simplify right side
    139,524.88x = 11,570,502,533.64
  5. Step 5: Solve for x
    x = 11,570,502,533.64/139,524.88
  6. Step 6: Final answer
    x = 82,927.88

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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.