Home / 190,021.40-284,844.10-90,005.80

Finding the Fourth Proportional to 190,021.40, 284,844.10 and 90,005.80

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Solution

The fourth proportional to 190,021.40, 284,844.10 and 90,005.80 is: 134,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,021.40 : 284,844.10 = 90,005.80 : x
  2. Step 2: Convert to fraction form
    190,021.40/284,844.10 = 90,005.80/x
  3. Step 3: Cross multiply
    190,021.40x = 284,844.10 × 90,005.80
  4. Step 4: Simplify right side
    190,021.40x = 25,637,621,095.78
  5. Step 5: Solve for x
    x = 25,637,621,095.78/190,021.40
  6. Step 6: Final answer
    x = 134,919.65

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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.