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Finding the Fourth Proportional to 166,648.48, 249,722.16 and 66,709.60

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Solution

The fourth proportional to 166,648.48, 249,722.16 and 66,709.60 is: 99,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,648.48 : 249,722.16 = 66,709.60 : x
  2. Step 2: Convert to fraction form
    166,648.48/249,722.16 = 66,709.60/x
  3. Step 3: Cross multiply
    166,648.48x = 249,722.16 × 66,709.60
  4. Step 4: Simplify right side
    166,648.48x = 16,658,865,404.74
  5. Step 5: Solve for x
    x = 16,658,865,404.74/166,648.48
  6. Step 6: Final answer
    x = 99,964.10

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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.