Home / 190,939.65-286,520.49-78,631.17

Finding the Fourth Proportional to 190,939.65, 286,520.49 and 78,631.17

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Solution

The fourth proportional to 190,939.65, 286,520.49 and 78,631.17 is: 117,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,939.65 : 286,520.49 = 78,631.17 : x
  2. Step 2: Convert to fraction form
    190,939.65/286,520.49 = 78,631.17/x
  3. Step 3: Cross multiply
    190,939.65x = 286,520.49 × 78,631.17
  4. Step 4: Simplify right side
    190,939.65x = 22,529,441,357.67
  5. Step 5: Solve for x
    x = 22,529,441,357.67/190,939.65
  6. Step 6: Final answer
    x = 117,992.47

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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.