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Finding the Fourth Proportional to 166,390.40, 249,610.17 and 61,201.64

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Solution

The fourth proportional to 166,390.40, 249,610.17 and 61,201.64 is: 91,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,390.40 : 249,610.17 = 61,201.64 : x
  2. Step 2: Convert to fraction form
    166,390.40/249,610.17 = 61,201.64/x
  3. Step 3: Cross multiply
    166,390.40x = 249,610.17 × 61,201.64
  4. Step 4: Simplify right side
    166,390.40x = 15,276,551,764.68
  5. Step 5: Solve for x
    x = 15,276,551,764.68/166,390.40
  6. Step 6: Final answer
    x = 91,811.50

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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.