Home / 140,070.78-210,142.62-40,239.12

Finding the Fourth Proportional to 140,070.78, 210,142.62 and 40,239.12

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Solution

The fourth proportional to 140,070.78, 210,142.62 and 40,239.12 is: 60,369.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,070.78 : 210,142.62 = 40,239.12 : x
  2. Step 2: Convert to fraction form
    140,070.78/210,142.62 = 40,239.12/x
  3. Step 3: Cross multiply
    140,070.78x = 210,142.62 × 40,239.12
  4. Step 4: Simplify right side
    140,070.78x = 8,455,954,103.29
  5. Step 5: Solve for x
    x = 8,455,954,103.29/140,070.78
  6. Step 6: Final answer
    x = 60,369.15

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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.