Home / 148,968.64-205,571.52-81,900.16

Finding the Fourth Proportional to 148,968.64, 205,571.52 and 81,900.16

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Solution

The fourth proportional to 148,968.64, 205,571.52 and 81,900.16 is: 113,019.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,968.64 : 205,571.52 = 81,900.16 : x
  2. Step 2: Convert to fraction form
    148,968.64/205,571.52 = 81,900.16/x
  3. Step 3: Cross multiply
    148,968.64x = 205,571.52 × 81,900.16
  4. Step 4: Simplify right side
    148,968.64x = 16,836,340,379.44
  5. Step 5: Solve for x
    x = 16,836,340,379.44/148,968.64
  6. Step 6: Final answer
    x = 113,019.36

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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.