Home / 190,314.72-285,512.16-71,983.52

Finding the Fourth Proportional to 190,314.72, 285,512.16 and 71,983.52

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Solution

The fourth proportional to 190,314.72, 285,512.16 and 71,983.52 is: 107,990.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,314.72 : 285,512.16 = 71,983.52 : x
  2. Step 2: Convert to fraction form
    190,314.72/285,512.16 = 71,983.52/x
  3. Step 3: Cross multiply
    190,314.72x = 285,512.16 × 71,983.52
  4. Step 4: Simplify right side
    190,314.72x = 20,552,170,279.60
  5. Step 5: Solve for x
    x = 20,552,170,279.60/190,314.72
  6. Step 6: Final answer
    x = 107,990.44

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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.