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Finding the Fourth Proportional to 166,369.64, 249,318.56 and 128,754.60

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Solution

The fourth proportional to 166,369.64, 249,318.56 and 128,754.60 is: 192,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,369.64 : 249,318.56 = 128,754.60 : x
  2. Step 2: Convert to fraction form
    166,369.64/249,318.56 = 128,754.60/x
  3. Step 3: Cross multiply
    166,369.64x = 249,318.56 × 128,754.60
  4. Step 4: Simplify right side
    166,369.64x = 32,100,911,465.38
  5. Step 5: Solve for x
    x = 32,100,911,465.38/166,369.64
  6. Step 6: Final answer
    x = 192,949.34

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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.