Home / 139,847.10-192,988.64-76,184.74

Finding the Fourth Proportional to 139,847.10, 192,988.64 and 76,184.74

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Solution

The fourth proportional to 139,847.10, 192,988.64 and 76,184.74 is: 105,134.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,847.10 : 192,988.64 = 76,184.74 : x
  2. Step 2: Convert to fraction form
    139,847.10/192,988.64 = 76,184.74/x
  3. Step 3: Cross multiply
    139,847.10x = 192,988.64 × 76,184.74
  4. Step 4: Simplify right side
    139,847.10x = 14,702,789,361.35
  5. Step 5: Solve for x
    x = 14,702,789,361.35/139,847.10
  6. Step 6: Final answer
    x = 105,134.75

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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.