Home / 166,131.40-249,233.55-81,931.90

Finding the Fourth Proportional to 166,131.40, 249,233.55 and 81,931.90

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Solution

The fourth proportional to 166,131.40, 249,233.55 and 81,931.90 is: 122,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,131.40 : 249,233.55 = 81,931.90 : x
  2. Step 2: Convert to fraction form
    166,131.40/249,233.55 = 81,931.90/x
  3. Step 3: Cross multiply
    166,131.40x = 249,233.55 × 81,931.90
  4. Step 4: Simplify right side
    166,131.40x = 20,420,178,295.25
  5. Step 5: Solve for x
    x = 20,420,178,295.25/166,131.40
  6. Step 6: Final answer
    x = 122,915.83

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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.