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Finding the Fourth Proportional to 118,638.60, 178,055.10 and 114,750.60

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Solution

The fourth proportional to 118,638.60, 178,055.10 and 114,750.60 is: 172,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,638.60 : 178,055.10 = 114,750.60 : x
  2. Step 2: Convert to fraction form
    118,638.60/178,055.10 = 114,750.60/x
  3. Step 3: Cross multiply
    118,638.60x = 178,055.10 × 114,750.60
  4. Step 4: Simplify right side
    118,638.60x = 20,431,929,558.06
  5. Step 5: Solve for x
    x = 20,431,929,558.06/118,638.60
  6. Step 6: Final answer
    x = 172,219.91

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1.5x scale

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.