Home / 190,490.29-285,715.38-78,182.37

Finding the Fourth Proportional to 190,490.29, 285,715.38 and 78,182.37

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Solution

The fourth proportional to 190,490.29, 285,715.38 and 78,182.37 is: 117,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,490.29 : 285,715.38 = 78,182.37 : x
  2. Step 2: Convert to fraction form
    190,490.29/285,715.38 = 78,182.37/x
  3. Step 3: Cross multiply
    190,490.29x = 285,715.38 × 78,182.37
  4. Step 4: Simplify right side
    190,490.29x = 22,337,905,847.03
  5. Step 5: Solve for x
    x = 22,337,905,847.03/190,490.29
  6. Step 6: Final answer
    x = 117,265.33

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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.