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Finding the Fourth Proportional to 166,419.40, 249,629.10 and 73,107.40

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Solution

The fourth proportional to 166,419.40, 249,629.10 and 73,107.40 is: 109,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,419.40 : 249,629.10 = 73,107.40 : x
  2. Step 2: Convert to fraction form
    166,419.40/249,629.10 = 73,107.40/x
  3. Step 3: Cross multiply
    166,419.40x = 249,629.10 × 73,107.40
  4. Step 4: Simplify right side
    166,419.40x = 18,249,734,465.34
  5. Step 5: Solve for x
    x = 18,249,734,465.34/166,419.40
  6. Step 6: Final answer
    x = 109,661.10

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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.