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Finding the Fourth Proportional to 166,404.80, 249,643.65 and 66,539.90

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Solution

The fourth proportional to 166,404.80, 249,643.65 and 66,539.90 is: 99,824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,404.80 : 249,643.65 = 66,539.90 : x
  2. Step 2: Convert to fraction form
    166,404.80/249,643.65 = 66,539.90/x
  3. Step 3: Cross multiply
    166,404.80x = 249,643.65 × 66,539.90
  4. Step 4: Simplify right side
    166,404.80x = 16,611,263,506.64
  5. Step 5: Solve for x
    x = 16,611,263,506.64/166,404.80
  6. Step 6: Final answer
    x = 99,824.43

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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.