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Finding the Fourth Proportional to 166,491.78, 249,696.10 and 65,310.40

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Solution

The fourth proportional to 166,491.78, 249,696.10 and 65,310.40 is: 97,949.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,491.78 : 249,696.10 = 65,310.40 : x
  2. Step 2: Convert to fraction form
    166,491.78/249,696.10 = 65,310.40/x
  3. Step 3: Cross multiply
    166,491.78x = 249,696.10 × 65,310.40
  4. Step 4: Simplify right side
    166,491.78x = 16,307,750,594.41
  5. Step 5: Solve for x
    x = 16,307,750,594.41/166,491.78
  6. Step 6: Final answer
    x = 97,949.28

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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.