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Finding the Fourth Proportional to 166,670.80, 249,811.80 and 66,781.60

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Solution

The fourth proportional to 166,670.80, 249,811.80 and 66,781.60 is: 100,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,670.80 : 249,811.80 = 66,781.60 : x
  2. Step 2: Convert to fraction form
    166,670.80/249,811.80 = 66,781.60/x
  3. Step 3: Cross multiply
    166,670.80x = 249,811.80 × 66,781.60
  4. Step 4: Simplify right side
    166,670.80x = 16,682,831,702.88
  5. Step 5: Solve for x
    x = 16,682,831,702.88/166,670.80
  6. Step 6: Final answer
    x = 100,094.51

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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.