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Finding the Fourth Proportional to 166,440.80, 249,817.80 and 87,611.60

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Solution

The fourth proportional to 166,440.80, 249,817.80 and 87,611.60 is: 131,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,440.80 : 249,817.80 = 87,611.60 : x
  2. Step 2: Convert to fraction form
    166,440.80/249,817.80 = 87,611.60/x
  3. Step 3: Cross multiply
    166,440.80x = 249,817.80 × 87,611.60
  4. Step 4: Simplify right side
    166,440.80x = 21,886,937,166.48
  5. Step 5: Solve for x
    x = 21,886,937,166.48/166,440.80
  6. Step 6: Final answer
    x = 131,499.83

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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.