Home / 186,918.80-280,465.74-81,724.16

Finding the Fourth Proportional to 186,918.80, 280,465.74 and 81,724.16

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Solution

The fourth proportional to 186,918.80, 280,465.74 and 81,724.16 is: 122,624.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,918.80 : 280,465.74 = 81,724.16 : x
  2. Step 2: Convert to fraction form
    186,918.80/280,465.74 = 81,724.16/x
  3. Step 3: Cross multiply
    186,918.80x = 280,465.74 × 81,724.16
  4. Step 4: Simplify right side
    186,918.80x = 22,920,827,010.28
  5. Step 5: Solve for x
    x = 22,920,827,010.28/186,918.80
  6. Step 6: Final answer
    x = 122,624.51

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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.