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Finding the Fourth Proportional to 166,413.60, 249,620.40 and 66,621.60

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Solution

The fourth proportional to 166,413.60, 249,620.40 and 66,621.60 is: 99,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,413.60 : 249,620.40 = 66,621.60 : x
  2. Step 2: Convert to fraction form
    166,413.60/249,620.40 = 66,621.60/x
  3. Step 3: Cross multiply
    166,413.60x = 249,620.40 × 66,621.60
  4. Step 4: Simplify right side
    166,413.60x = 16,630,110,440.64
  5. Step 5: Solve for x
    x = 16,630,110,440.64/166,413.60
  6. Step 6: Final answer
    x = 99,932.40

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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.