Home / 140,211.42-210,142.17-70,110.78

Finding the Fourth Proportional to 140,211.42, 210,142.17 and 70,110.78

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Solution

The fourth proportional to 140,211.42, 210,142.17 and 70,110.78 is: 105,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,211.42 : 210,142.17 = 70,110.78 : x
  2. Step 2: Convert to fraction form
    140,211.42/210,142.17 = 70,110.78/x
  3. Step 3: Cross multiply
    140,211.42x = 210,142.17 × 70,110.78
  4. Step 4: Simplify right side
    140,211.42x = 14,733,231,449.59
  5. Step 5: Solve for x
    x = 14,733,231,449.59/140,211.42
  6. Step 6: Final answer
    x = 105,078.68

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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.