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Finding the Fourth Proportional to 162,119.80, 243,033.90 and 105,986.80

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Solution

The fourth proportional to 162,119.80, 243,033.90 and 105,986.80 is: 158,884.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,119.80 : 243,033.90 = 105,986.80 : x
  2. Step 2: Convert to fraction form
    162,119.80/243,033.90 = 105,986.80/x
  3. Step 3: Cross multiply
    162,119.80x = 243,033.90 × 105,986.80
  4. Step 4: Simplify right side
    162,119.80x = 25,758,385,352.52
  5. Step 5: Solve for x
    x = 25,758,385,352.52/162,119.80
  6. Step 6: Final answer
    x = 158,884.88

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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.