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Finding the Fourth Proportional to 166,618.40, 249,854.70 and 66,745.40

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Solution

The fourth proportional to 166,618.40, 249,854.70 and 66,745.40 is: 100,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,618.40 : 249,854.70 = 66,745.40 : x
  2. Step 2: Convert to fraction form
    166,618.40/249,854.70 = 66,745.40/x
  3. Step 3: Cross multiply
    166,618.40x = 249,854.70 × 66,745.40
  4. Step 4: Simplify right side
    166,618.40x = 16,676,651,893.38
  5. Step 5: Solve for x
    x = 16,676,651,893.38/166,618.40
  6. Step 6: Final answer
    x = 100,088.90

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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.