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Finding the Fourth Proportional to 166,816.72, 249,929.80 and 138,571.60

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Solution

The fourth proportional to 166,816.72, 249,929.80 and 138,571.60 is: 207,612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,816.72 : 249,929.80 = 138,571.60 : x
  2. Step 2: Convert to fraction form
    166,816.72/249,929.80 = 138,571.60/x
  3. Step 3: Cross multiply
    166,816.72x = 249,929.80 × 138,571.60
  4. Step 4: Simplify right side
    166,816.72x = 34,633,172,273.68
  5. Step 5: Solve for x
    x = 34,633,172,273.68/166,816.72
  6. Step 6: Final answer
    x = 207,612.12

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1.5x scale

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.