Home / 138,958.32-208,466.81-53,571.36

Finding the Fourth Proportional to 138,958.32, 208,466.81 and 53,571.36

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Solution

The fourth proportional to 138,958.32, 208,466.81 and 53,571.36 is: 80,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,958.32 : 208,466.81 = 53,571.36 : x
  2. Step 2: Convert to fraction form
    138,958.32/208,466.81 = 53,571.36/x
  3. Step 3: Cross multiply
    138,958.32x = 208,466.81 × 53,571.36
  4. Step 4: Simplify right side
    138,958.32x = 11,167,850,526.56
  5. Step 5: Solve for x
    x = 11,167,850,526.56/138,958.32
  6. Step 6: Final answer
    x = 80,368.35

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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.