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Finding the Fourth Proportional to 166,545.40, 249,745.20 and 66,672.40

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Solution

The fourth proportional to 166,545.40, 249,745.20 and 66,672.40 is: 99,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,545.40 : 249,745.20 = 66,672.40 : x
  2. Step 2: Convert to fraction form
    166,545.40/249,745.20 = 66,672.40/x
  3. Step 3: Cross multiply
    166,545.40x = 249,745.20 × 66,672.40
  4. Step 4: Simplify right side
    166,545.40x = 16,651,111,872.48
  5. Step 5: Solve for x
    x = 16,651,111,872.48/166,545.40
  6. Step 6: Final answer
    x = 99,979.42

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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.