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Finding the Fourth Proportional to 199,419.15, 299,041.16 and 74,672.67

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Solution

The fourth proportional to 199,419.15, 299,041.16 and 74,672.67 is: 111,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,419.15 : 299,041.16 = 74,672.67 : x
  2. Step 2: Convert to fraction form
    199,419.15/299,041.16 = 74,672.67/x
  3. Step 3: Cross multiply
    199,419.15x = 299,041.16 × 74,672.67
  4. Step 4: Simplify right side
    199,419.15x = 22,330,201,483.73
  5. Step 5: Solve for x
    x = 22,330,201,483.73/199,419.15
  6. Step 6: Final answer
    x = 111,976.21

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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.