Home / 76,143.11-113,669.69-66,181.32

Finding the Fourth Proportional to 76,143.11, 113,669.69 and 66,181.32

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Solution

The fourth proportional to 76,143.11, 113,669.69 and 66,181.32 is: 98,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,143.11 : 113,669.69 = 66,181.32 : x
  2. Step 2: Convert to fraction form
    76,143.11/113,669.69 = 66,181.32/x
  3. Step 3: Cross multiply
    76,143.11x = 113,669.69 × 66,181.32
  4. Step 4: Simplify right side
    76,143.11x = 7,522,809,797.28
  5. Step 5: Solve for x
    x = 7,522,809,797.28/76,143.11
  6. Step 6: Final answer
    x = 98,798.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.