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Finding the Fourth Proportional to 166,090.70, 249,136.05 and 156,905.30

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Solution

The fourth proportional to 166,090.70, 249,136.05 and 156,905.30 is: 235,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,090.70 : 249,136.05 = 156,905.30 : x
  2. Step 2: Convert to fraction form
    166,090.70/249,136.05 = 156,905.30/x
  3. Step 3: Cross multiply
    166,090.70x = 249,136.05 × 156,905.30
  4. Step 4: Simplify right side
    166,090.70x = 39,090,766,666.07
  5. Step 5: Solve for x
    x = 39,090,766,666.07/166,090.70
  6. Step 6: Final answer
    x = 235,357.95

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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.