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Finding the Fourth Proportional to 199,109.80, 274,771.52 and 109,685.80

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Solution

The fourth proportional to 199,109.80, 274,771.52 and 109,685.80 is: 151,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,109.80 : 274,771.52 = 109,685.80 : x
  2. Step 2: Convert to fraction form
    199,109.80/274,771.52 = 109,685.80/x
  3. Step 3: Cross multiply
    199,109.80x = 274,771.52 × 109,685.80
  4. Step 4: Simplify right side
    199,109.80x = 30,138,533,988.42
  5. Step 5: Solve for x
    x = 30,138,533,988.42/199,109.80
  6. Step 6: Final answer
    x = 151,366.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.