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Finding the Fourth Proportional to 161,847.40, 242,771.10 and 105,860.20

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Solution

The fourth proportional to 161,847.40, 242,771.10 and 105,860.20 is: 158,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,847.40 : 242,771.10 = 105,860.20 : x
  2. Step 2: Convert to fraction form
    161,847.40/242,771.10 = 105,860.20/x
  3. Step 3: Cross multiply
    161,847.40x = 242,771.10 × 105,860.20
  4. Step 4: Simplify right side
    161,847.40x = 25,699,797,200.22
  5. Step 5: Solve for x
    x = 25,699,797,200.22/161,847.40
  6. Step 6: Final answer
    x = 158,790.30

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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.