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Finding the Fourth Proportional to 190,477.02, 285,628.98 and 90,757.74

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Solution

The fourth proportional to 190,477.02, 285,628.98 and 90,757.74 is: 136,095.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,477.02 : 285,628.98 = 90,757.74 : x
  2. Step 2: Convert to fraction form
    190,477.02/285,628.98 = 90,757.74/x
  3. Step 3: Cross multiply
    190,477.02x = 285,628.98 × 90,757.74
  4. Step 4: Simplify right side
    190,477.02x = 25,923,040,703.31
  5. Step 5: Solve for x
    x = 25,923,040,703.31/190,477.02
  6. Step 6: Final answer
    x = 136,095.37

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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.