Home / 166,181.40-249,308.55-81,981.90

Finding the Fourth Proportional to 166,181.40, 249,308.55 and 81,981.90

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Solution

The fourth proportional to 166,181.40, 249,308.55 and 81,981.90 is: 122,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,181.40 : 249,308.55 = 81,981.90 : x
  2. Step 2: Convert to fraction form
    166,181.40/249,308.55 = 81,981.90/x
  3. Step 3: Cross multiply
    166,181.40x = 249,308.55 × 81,981.90
  4. Step 4: Simplify right side
    166,181.40x = 20,438,788,615.25
  5. Step 5: Solve for x
    x = 20,438,788,615.25/166,181.40
  6. Step 6: Final answer
    x = 122,990.83

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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.