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Finding the Fourth Proportional to 199,431.60, 299,147.40 and 120,699.60

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Solution

The fourth proportional to 199,431.60, 299,147.40 and 120,699.60 is: 181,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,431.60 : 299,147.40 = 120,699.60 : x
  2. Step 2: Convert to fraction form
    199,431.60/299,147.40 = 120,699.60/x
  3. Step 3: Cross multiply
    199,431.60x = 299,147.40 × 120,699.60
  4. Step 4: Simplify right side
    199,431.60x = 36,106,971,521.04
  5. Step 5: Solve for x
    x = 36,106,971,521.04/199,431.60
  6. Step 6: Final answer
    x = 181,049.40

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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.