Home / 166,145.40-249,254.55-81,945.90

Finding the Fourth Proportional to 166,145.40, 249,254.55 and 81,945.90

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Solution

The fourth proportional to 166,145.40, 249,254.55 and 81,945.90 is: 122,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,145.40 : 249,254.55 = 81,945.90 : x
  2. Step 2: Convert to fraction form
    166,145.40/249,254.55 = 81,945.90/x
  3. Step 3: Cross multiply
    166,145.40x = 249,254.55 × 81,945.90
  4. Step 4: Simplify right side
    166,145.40x = 20,425,388,428.85
  5. Step 5: Solve for x
    x = 20,425,388,428.85/166,145.40
  6. Step 6: Final answer
    x = 122,936.83

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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.