Home / 119,173.20-178,889.40-66,685.20

Finding the Fourth Proportional to 119,173.20, 178,889.40 and 66,685.20

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Solution

The fourth proportional to 119,173.20, 178,889.40 and 66,685.20 is: 100,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,173.20 : 178,889.40 = 66,685.20 : x
  2. Step 2: Convert to fraction form
    119,173.20/178,889.40 = 66,685.20/x
  3. Step 3: Cross multiply
    119,173.20x = 178,889.40 × 66,685.20
  4. Step 4: Simplify right side
    119,173.20x = 11,929,275,416.88
  5. Step 5: Solve for x
    x = 11,929,275,416.88/119,173.20
  6. Step 6: Final answer
    x = 100,100.32

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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.