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Finding the Fourth Proportional to 118,803.08, 178,188 and 30,051.20

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Solution

The fourth proportional to 118,803.08, 178,188 and 30,051.20 is: 45,072.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,803.08 : 178,188 = 30,051.20 : x
  2. Step 2: Convert to fraction form
    118,803.08/178,188 = 30,051.20/x
  3. Step 3: Cross multiply
    118,803.08x = 178,188 × 30,051.20
  4. Step 4: Simplify right side
    118,803.08x = 5,354,763,225.60
  5. Step 5: Solve for x
    x = 5,354,763,225.60/118,803.08
  6. Step 6: Final answer
    x = 45,072.60

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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.