Home / 190,999.62-286,401.02-85,728.38

Finding the Fourth Proportional to 190,999.62, 286,401.02 and 85,728.38

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Solution

The fourth proportional to 190,999.62, 286,401.02 and 85,728.38 is: 128,548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,999.62 : 286,401.02 = 85,728.38 : x
  2. Step 2: Convert to fraction form
    190,999.62/286,401.02 = 85,728.38/x
  3. Step 3: Cross multiply
    190,999.62x = 286,401.02 × 85,728.38
  4. Step 4: Simplify right side
    190,999.62x = 24,552,693,614.30
  5. Step 5: Solve for x
    x = 24,552,693,614.30/190,999.62
  6. Step 6: Final answer
    x = 128,548.39

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1.5x scale

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.