Home / 139,855.10-192,999.67-76,192.74

Finding the Fourth Proportional to 139,855.10, 192,999.67 and 76,192.74

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Solution

The fourth proportional to 139,855.10, 192,999.67 and 76,192.74 is: 105,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,855.10 : 192,999.67 = 76,192.74 : x
  2. Step 2: Convert to fraction form
    139,855.10/192,999.67 = 76,192.74/x
  3. Step 3: Cross multiply
    139,855.10x = 192,999.67 × 76,192.74
  4. Step 4: Simplify right side
    139,855.10x = 14,705,173,485.91
  5. Step 5: Solve for x
    x = 14,705,173,485.91/139,855.10
  6. Step 6: Final answer
    x = 105,145.78

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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.