Home / 140,212.42-210,143.67-70,111.78

Finding the Fourth Proportional to 140,212.42, 210,143.67 and 70,111.78

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Solution

The fourth proportional to 140,212.42, 210,143.67 and 70,111.78 is: 105,080.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,212.42 : 210,143.67 = 70,111.78 : x
  2. Step 2: Convert to fraction form
    140,212.42/210,143.67 = 70,111.78/x
  3. Step 3: Cross multiply
    140,212.42x = 210,143.67 × 70,111.78
  4. Step 4: Simplify right side
    140,212.42x = 14,733,546,759.43
  5. Step 5: Solve for x
    x = 14,733,546,759.43/140,212.42
  6. Step 6: Final answer
    x = 105,080.18

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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.