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Finding the Fourth Proportional to 166,618.68, 249,938.41 and 66,765.90

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Solution

The fourth proportional to 166,618.68, 249,938.41 and 66,765.90 is: 100,153.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,618.68 : 249,938.41 = 66,765.90 : x
  2. Step 2: Convert to fraction form
    166,618.68/249,938.41 = 66,765.90/x
  3. Step 3: Cross multiply
    166,618.68x = 249,938.41 × 66,765.90
  4. Step 4: Simplify right side
    166,618.68x = 16,687,363,346.15
  5. Step 5: Solve for x
    x = 16,687,363,346.15/166,618.68
  6. Step 6: Final answer
    x = 100,153.01

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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.