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Finding the Fourth Proportional to 166,804.20, 249,866.10 and 103,429.80

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Solution

The fourth proportional to 166,804.20, 249,866.10 and 103,429.80 is: 154,933.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,804.20 : 249,866.10 = 103,429.80 : x
  2. Step 2: Convert to fraction form
    166,804.20/249,866.10 = 103,429.80/x
  3. Step 3: Cross multiply
    166,804.20x = 249,866.10 × 103,429.80
  4. Step 4: Simplify right side
    166,804.20x = 25,843,600,749.78
  5. Step 5: Solve for x
    x = 25,843,600,749.78/166,804.20
  6. Step 6: Final answer
    x = 154,933.75

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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.