Home / 190,664.37-286,109.55-72,435.15

Finding the Fourth Proportional to 190,664.37, 286,109.55 and 72,435.15

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Solution

The fourth proportional to 190,664.37, 286,109.55 and 72,435.15 is: 108,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,664.37 : 286,109.55 = 72,435.15 : x
  2. Step 2: Convert to fraction form
    190,664.37/286,109.55 = 72,435.15/x
  3. Step 3: Cross multiply
    190,664.37x = 286,109.55 × 72,435.15
  4. Step 4: Simplify right side
    190,664.37x = 20,724,388,170.68
  5. Step 5: Solve for x
    x = 20,724,388,170.68/190,664.37
  6. Step 6: Final answer
    x = 108,695.65

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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.