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Finding the Fourth Proportional to 118,813.40, 178,220.10 and 110,940.20

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Solution

The fourth proportional to 118,813.40, 178,220.10 and 110,940.20 is: 166,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.40 : 178,220.10 = 110,940.20 : x
  2. Step 2: Convert to fraction form
    118,813.40/178,220.10 = 110,940.20/x
  3. Step 3: Cross multiply
    118,813.40x = 178,220.10 × 110,940.20
  4. Step 4: Simplify right side
    118,813.40x = 19,771,773,538.02
  5. Step 5: Solve for x
    x = 19,771,773,538.02/118,813.40
  6. Step 6: Final answer
    x = 166,410.30

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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.