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Finding the Fourth Proportional to 126,718.42, 190,039.14 and 66,714.42

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Solution

The fourth proportional to 126,718.42, 190,039.14 and 66,714.42 is: 100,051.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,718.42 : 190,039.14 = 66,714.42 : x
  2. Step 2: Convert to fraction form
    126,718.42/190,039.14 = 66,714.42/x
  3. Step 3: Cross multiply
    126,718.42x = 190,039.14 × 66,714.42
  4. Step 4: Simplify right side
    126,718.42x = 12,678,351,002.40
  5. Step 5: Solve for x
    x = 12,678,351,002.40/126,718.42
  6. Step 6: Final answer
    x = 100,051.37

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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.