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Finding the Fourth Proportional to 166,490.78, 249,694.60 and 65,309.40

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Solution

The fourth proportional to 166,490.78, 249,694.60 and 65,309.40 is: 97,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,490.78 : 249,694.60 = 65,309.40 : x
  2. Step 2: Convert to fraction form
    166,490.78/249,694.60 = 65,309.40/x
  3. Step 3: Cross multiply
    166,490.78x = 249,694.60 × 65,309.40
  4. Step 4: Simplify right side
    166,490.78x = 16,307,403,097.49
  5. Step 5: Solve for x
    x = 16,307,403,097.49/166,490.78
  6. Step 6: Final answer
    x = 97,947.79

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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.