Home / 139,226.90-192,117.18-77,964.55

Finding the Fourth Proportional to 139,226.90, 192,117.18 and 77,964.55

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Solution

The fourth proportional to 139,226.90, 192,117.18 and 77,964.55 is: 107,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,226.90 : 192,117.18 = 77,964.55 : x
  2. Step 2: Convert to fraction form
    139,226.90/192,117.18 = 77,964.55/x
  3. Step 3: Cross multiply
    139,226.90x = 192,117.18 × 77,964.55
  4. Step 4: Simplify right side
    139,226.90x = 14,978,329,485.97
  5. Step 5: Solve for x
    x = 14,978,329,485.97/139,226.90
  6. Step 6: Final answer
    x = 107,582.15

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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.