Home / 139,782.06-192,902.32-76,119.86

Finding the Fourth Proportional to 139,782.06, 192,902.32 and 76,119.86

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Solution

The fourth proportional to 139,782.06, 192,902.32 and 76,119.86 is: 105,047.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,782.06 : 192,902.32 = 76,119.86 : x
  2. Step 2: Convert to fraction form
    139,782.06/192,902.32 = 76,119.86/x
  3. Step 3: Cross multiply
    139,782.06x = 192,902.32 × 76,119.86
  4. Step 4: Simplify right side
    139,782.06x = 14,683,697,592.08
  5. Step 5: Solve for x
    x = 14,683,697,592.08/139,782.06
  6. Step 6: Final answer
    x = 105,047.08

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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.