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Finding the Fourth Proportional to 166,564.40, 249,773.70 and 66,691.40

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Solution

The fourth proportional to 166,564.40, 249,773.70 and 66,691.40 is: 100,007.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,564.40 : 249,773.70 = 66,691.40 : x
  2. Step 2: Convert to fraction form
    166,564.40/249,773.70 = 66,691.40/x
  3. Step 3: Cross multiply
    166,564.40x = 249,773.70 × 66,691.40
  4. Step 4: Simplify right side
    166,564.40x = 16,657,757,736.18
  5. Step 5: Solve for x
    x = 16,657,757,736.18/166,564.40
  6. Step 6: Final answer
    x = 100,007.91

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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.