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Finding the Fourth Proportional to 190,343.72, 285,404.90 and 72,024.20

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Solution

The fourth proportional to 190,343.72, 285,404.90 and 72,024.20 is: 107,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,343.72 : 285,404.90 = 72,024.20 : x
  2. Step 2: Convert to fraction form
    190,343.72/285,404.90 = 72,024.20/x
  3. Step 3: Cross multiply
    190,343.72x = 285,404.90 × 72,024.20
  4. Step 4: Simplify right side
    190,343.72x = 20,556,059,598.58
  5. Step 5: Solve for x
    x = 20,556,059,598.58/190,343.72
  6. Step 6: Final answer
    x = 107,994.42

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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.