Home / 139,975.20-209,962.80-132,393.60

Finding the Fourth Proportional to 139,975.20, 209,962.80 and 132,393.60

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Solution

The fourth proportional to 139,975.20, 209,962.80 and 132,393.60 is: 198,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,975.20 : 209,962.80 = 132,393.60 : x
  2. Step 2: Convert to fraction form
    139,975.20/209,962.80 = 132,393.60/x
  3. Step 3: Cross multiply
    139,975.20x = 209,962.80 × 132,393.60
  4. Step 4: Simplify right side
    139,975.20x = 27,797,730,958.08
  5. Step 5: Solve for x
    x = 27,797,730,958.08/139,975.20
  6. Step 6: Final answer
    x = 198,590.40

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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.