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Finding the Fourth Proportional to 162,004.64, 243,015.60 and 51,188

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Solution

The fourth proportional to 162,004.64, 243,015.60 and 51,188 is: 76,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,004.64 : 243,015.60 = 51,188 : x
  2. Step 2: Convert to fraction form
    162,004.64/243,015.60 = 51,188/x
  3. Step 3: Cross multiply
    162,004.64x = 243,015.60 × 51,188
  4. Step 4: Simplify right side
    162,004.64x = 12,439,482,532.80
  5. Step 5: Solve for x
    x = 12,439,482,532.80/162,004.64
  6. Step 6: Final answer
    x = 76,784.73

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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.