Home / 139,150.27-192,011.18-77,899.79

Finding the Fourth Proportional to 139,150.27, 192,011.18 and 77,899.79

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Solution

The fourth proportional to 139,150.27, 192,011.18 and 77,899.79 is: 107,492.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,150.27 : 192,011.18 = 77,899.79 : x
  2. Step 2: Convert to fraction form
    139,150.27/192,011.18 = 77,899.79/x
  3. Step 3: Cross multiply
    139,150.27x = 192,011.18 × 77,899.79
  4. Step 4: Simplify right side
    139,150.27x = 14,957,630,690.18
  5. Step 5: Solve for x
    x = 14,957,630,690.18/139,150.27
  6. Step 6: Final answer
    x = 107,492.64

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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.