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Finding the Fourth Proportional to 118,813.60, 178,220.40 and 48,743.20

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Solution

The fourth proportional to 118,813.60, 178,220.40 and 48,743.20 is: 73,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,813.60 : 178,220.40 = 48,743.20 : x
  2. Step 2: Convert to fraction form
    118,813.60/178,220.40 = 48,743.20/x
  3. Step 3: Cross multiply
    118,813.60x = 178,220.40 × 48,743.20
  4. Step 4: Simplify right side
    118,813.60x = 8,687,032,601.28
  5. Step 5: Solve for x
    x = 8,687,032,601.28/118,813.60
  6. Step 6: Final answer
    x = 73,114.80

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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.