Home / 198,784.60-298,176.90-74,109.40

Finding the Fourth Proportional to 198,784.60, 298,176.90 and 74,109.40

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Solution

The fourth proportional to 198,784.60, 298,176.90 and 74,109.40 is: 111,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,784.60 : 298,176.90 = 74,109.40 : x
  2. Step 2: Convert to fraction form
    198,784.60/298,176.90 = 74,109.40/x
  3. Step 3: Cross multiply
    198,784.60x = 298,176.90 × 74,109.40
  4. Step 4: Simplify right side
    198,784.60x = 22,097,711,152.86
  5. Step 5: Solve for x
    x = 22,097,711,152.86/198,784.60
  6. Step 6: Final answer
    x = 111,164.10

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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.