Home / 190,346.15-285,519.53-78,005.43

Finding the Fourth Proportional to 190,346.15, 285,519.53 and 78,005.43

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Solution

The fourth proportional to 190,346.15, 285,519.53 and 78,005.43 is: 117,008.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,346.15 : 285,519.53 = 78,005.43 : x
  2. Step 2: Convert to fraction form
    190,346.15/285,519.53 = 78,005.43/x
  3. Step 3: Cross multiply
    190,346.15x = 285,519.53 × 78,005.43
  4. Step 4: Simplify right side
    190,346.15x = 22,272,073,906.06
  5. Step 5: Solve for x
    x = 22,272,073,906.06/190,346.15
  6. Step 6: Final answer
    x = 117,008.27

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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.