Home / 139,739.99-192,844.64-76,081.28

Finding the Fourth Proportional to 139,739.99, 192,844.64 and 76,081.28

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Solution

The fourth proportional to 139,739.99, 192,844.64 and 76,081.28 is: 104,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.99 : 192,844.64 = 76,081.28 : x
  2. Step 2: Convert to fraction form
    139,739.99/192,844.64 = 76,081.28/x
  3. Step 3: Cross multiply
    139,739.99x = 192,844.64 × 76,081.28
  4. Step 4: Simplify right side
    139,739.99x = 14,671,866,278.32
  5. Step 5: Solve for x
    x = 14,671,866,278.32/139,739.99
  6. Step 6: Final answer
    x = 104,994.05

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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.