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Finding the Fourth Proportional to 190,051.48, 285,159.90 and 119,136.64

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Solution

The fourth proportional to 190,051.48, 285,159.90 and 119,136.64 is: 178,756.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,051.48 : 285,159.90 = 119,136.64 : x
  2. Step 2: Convert to fraction form
    190,051.48/285,159.90 = 119,136.64/x
  3. Step 3: Cross multiply
    190,051.48x = 285,159.90 × 119,136.64
  4. Step 4: Simplify right side
    190,051.48x = 33,972,992,348.74
  5. Step 5: Solve for x
    x = 33,972,992,348.74/190,051.48
  6. Step 6: Final answer
    x = 178,756.79

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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.