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Finding the Fourth Proportional to 109,067.60, 163,479.90 and 42,485.60

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Solution

The fourth proportional to 109,067.60, 163,479.90 and 42,485.60 is: 63,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,067.60 : 163,479.90 = 42,485.60 : x
  2. Step 2: Convert to fraction form
    109,067.60/163,479.90 = 42,485.60/x
  3. Step 3: Cross multiply
    109,067.60x = 163,479.90 × 42,485.60
  4. Step 4: Simplify right side
    109,067.60x = 6,945,541,639.44
  5. Step 5: Solve for x
    x = 6,945,541,639.44/109,067.60
  6. Step 6: Final answer
    x = 63,681.07

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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.