Home / 142,786.60-213,975.10-105,052.20

Finding the Fourth Proportional to 142,786.60, 213,975.10 and 105,052.20

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Solution

The fourth proportional to 142,786.60, 213,975.10 and 105,052.20 is: 157,427.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.60 : 213,975.10 = 105,052.20 : x
  2. Step 2: Convert to fraction form
    142,786.60/213,975.10 = 105,052.20/x
  3. Step 3: Cross multiply
    142,786.60x = 213,975.10 × 105,052.20
  4. Step 4: Simplify right side
    142,786.60x = 22,478,555,000.22
  5. Step 5: Solve for x
    x = 22,478,555,000.22/142,786.60
  6. Step 6: Final answer
    x = 157,427.62

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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.