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Finding the Fourth Proportional to 166,643.70, 249,965.55 and 73,149.45

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Solution

The fourth proportional to 166,643.70, 249,965.55 and 73,149.45 is: 109,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,643.70 : 249,965.55 = 73,149.45 : x
  2. Step 2: Convert to fraction form
    166,643.70/249,965.55 = 73,149.45/x
  3. Step 3: Cross multiply
    166,643.70x = 249,965.55 × 73,149.45
  4. Step 4: Simplify right side
    166,643.70x = 18,284,842,501.45
  5. Step 5: Solve for x
    x = 18,284,842,501.45/166,643.70
  6. Step 6: Final answer
    x = 109,724.18

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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.