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Finding the Fourth Proportional to 137,991.60, 206,987.40 and 137,991.60

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Solution

The fourth proportional to 137,991.60, 206,987.40 and 137,991.60 is: 206,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,991.60 : 206,987.40 = 137,991.60 : x
  2. Step 2: Convert to fraction form
    137,991.60/206,987.40 = 137,991.60/x
  3. Step 3: Cross multiply
    137,991.60x = 206,987.40 × 137,991.60
  4. Step 4: Simplify right side
    137,991.60x = 28,562,522,505.84
  5. Step 5: Solve for x
    x = 28,562,522,505.84/137,991.60
  6. Step 6: Final answer
    x = 206,987.40

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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.