Home / 190,274.12-285,468.78-71,981.72

Finding the Fourth Proportional to 190,274.12, 285,468.78 and 71,981.72

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Solution

The fourth proportional to 190,274.12, 285,468.78 and 71,981.72 is: 107,994.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,274.12 : 285,468.78 = 71,981.72 : x
  2. Step 2: Convert to fraction form
    190,274.12/285,468.78 = 71,981.72/x
  3. Step 3: Cross multiply
    190,274.12x = 285,468.78 × 71,981.72
  4. Step 4: Simplify right side
    190,274.12x = 20,548,533,790.70
  5. Step 5: Solve for x
    x = 20,548,533,790.70/190,274.12
  6. Step 6: Final answer
    x = 107,994.37

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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.