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Finding the Fourth Proportional to 139,520.68, 192,538.27 and 75,858.32

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Solution

The fourth proportional to 139,520.68, 192,538.27 and 75,858.32 is: 104,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,520.68 : 192,538.27 = 75,858.32 : x
  2. Step 2: Convert to fraction form
    139,520.68/192,538.27 = 75,858.32/x
  3. Step 3: Cross multiply
    139,520.68x = 192,538.27 × 75,858.32
  4. Step 4: Simplify right side
    139,520.68x = 14,605,630,274.08
  5. Step 5: Solve for x
    x = 14,605,630,274.08/139,520.68
  6. Step 6: Final answer
    x = 104,684.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.