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Finding the Fourth Proportional to 166,364.40, 249,109.20 and 121,749.60

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Solution

The fourth proportional to 166,364.40, 249,109.20 and 121,749.60 is: 182,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,364.40 : 249,109.20 = 121,749.60 : x
  2. Step 2: Convert to fraction form
    166,364.40/249,109.20 = 121,749.60/x
  3. Step 3: Cross multiply
    166,364.40x = 249,109.20 × 121,749.60
  4. Step 4: Simplify right side
    166,364.40x = 30,328,945,456.32
  5. Step 5: Solve for x
    x = 30,328,945,456.32/166,364.40
  6. Step 6: Final answer
    x = 182,304.30

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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.