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Finding the Fourth Proportional to 190,047.48, 285,153.90 and 119,132.64

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Solution

The fourth proportional to 190,047.48, 285,153.90 and 119,132.64 is: 178,750.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,047.48 : 285,153.90 = 119,132.64 : x
  2. Step 2: Convert to fraction form
    190,047.48/285,153.90 = 119,132.64/x
  3. Step 3: Cross multiply
    190,047.48x = 285,153.90 × 119,132.64
  4. Step 4: Simplify right side
    190,047.48x = 33,971,136,913.30
  5. Step 5: Solve for x
    x = 33,971,136,913.30/190,047.48
  6. Step 6: Final answer
    x = 178,750.79

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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.