Home / 139,910.34-193,077.64-76,249.51

Finding the Fourth Proportional to 139,910.34, 193,077.64 and 76,249.51

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Solution

The fourth proportional to 139,910.34, 193,077.64 and 76,249.51 is: 105,225.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,910.34 : 193,077.64 = 76,249.51 : x
  2. Step 2: Convert to fraction form
    139,910.34/193,077.64 = 76,249.51/x
  3. Step 3: Cross multiply
    139,910.34x = 193,077.64 × 76,249.51
  4. Step 4: Simplify right side
    139,910.34x = 14,722,075,054.57
  5. Step 5: Solve for x
    x = 14,722,075,054.57/139,910.34
  6. Step 6: Final answer
    x = 105,225.07

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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.