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Finding the Fourth Proportional to 166,411.60, 249,847.80 and 131,390.80

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Solution

The fourth proportional to 166,411.60, 249,847.80 and 131,390.80 is: 197,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,411.60 : 249,847.80 = 131,390.80 : x
  2. Step 2: Convert to fraction form
    166,411.60/249,847.80 = 131,390.80/x
  3. Step 3: Cross multiply
    166,411.60x = 249,847.80 × 131,390.80
  4. Step 4: Simplify right side
    166,411.60x = 32,827,702,320.24
  5. Step 5: Solve for x
    x = 32,827,702,320.24/166,411.60
  6. Step 6: Final answer
    x = 197,268.11

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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.