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Finding the Fourth Proportional to 163,571.40, 245,357.10 and 137,327.40

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Solution

The fourth proportional to 163,571.40, 245,357.10 and 137,327.40 is: 205,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,571.40 : 245,357.10 = 137,327.40 : x
  2. Step 2: Convert to fraction form
    163,571.40/245,357.10 = 137,327.40/x
  3. Step 3: Cross multiply
    163,571.40x = 245,357.10 × 137,327.40
  4. Step 4: Simplify right side
    163,571.40x = 33,694,252,614.54
  5. Step 5: Solve for x
    x = 33,694,252,614.54/163,571.40
  6. Step 6: Final answer
    x = 205,991.10

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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.