Home / 190,727.32-286,078.28-78,378.44

Finding the Fourth Proportional to 190,727.32, 286,078.28 and 78,378.44

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Solution

The fourth proportional to 190,727.32, 286,078.28 and 78,378.44 is: 117,562.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,727.32 : 286,078.28 = 78,378.44 : x
  2. Step 2: Convert to fraction form
    190,727.32/286,078.28 = 78,378.44/x
  3. Step 3: Cross multiply
    190,727.32x = 286,078.28 × 78,378.44
  4. Step 4: Simplify right side
    190,727.32x = 22,422,369,304.28
  5. Step 5: Solve for x
    x = 22,422,369,304.28/190,727.32
  6. Step 6: Final answer
    x = 117,562.44

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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.