Home / 166,438.39-249,652.11-66,571.78

Finding the Fourth Proportional to 166,438.39, 249,652.11 and 66,571.78

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Solution

The fourth proportional to 166,438.39, 249,652.11 and 66,571.78 is: 99,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,438.39 : 249,652.11 = 66,571.78 : x
  2. Step 2: Convert to fraction form
    166,438.39/249,652.11 = 66,571.78/x
  3. Step 3: Cross multiply
    166,438.39x = 249,652.11 × 66,571.78
  4. Step 4: Simplify right side
    166,438.39x = 16,619,785,343.46
  5. Step 5: Solve for x
    x = 16,619,785,343.46/166,438.39
  6. Step 6: Final answer
    x = 99,855.48

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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.