Home / 81,842.54-113,145.68-81,095.32

Finding the Fourth Proportional to 81,842.54, 113,145.68 and 81,095.32

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Solution

The fourth proportional to 81,842.54, 113,145.68 and 81,095.32 is: 112,112.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,842.54 : 113,145.68 = 81,095.32 : x
  2. Step 2: Convert to fraction form
    81,842.54/113,145.68 = 81,095.32/x
  3. Step 3: Cross multiply
    81,842.54x = 113,145.68 × 81,095.32
  4. Step 4: Simplify right side
    81,842.54x = 9,175,585,126.22
  5. Step 5: Solve for x
    x = 9,175,585,126.22/81,842.54
  6. Step 6: Final answer
    x = 112,112.66

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1.5x scale

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.