Home / 139,986.80-193,182.69-76,325.66

Finding the Fourth Proportional to 139,986.80, 193,182.69 and 76,325.66

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Solution

The fourth proportional to 139,986.80, 193,182.69 and 76,325.66 is: 105,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,986.80 : 193,182.69 = 76,325.66 : x
  2. Step 2: Convert to fraction form
    139,986.80/193,182.69 = 76,325.66/x
  3. Step 3: Cross multiply
    139,986.80x = 193,182.69 × 76,325.66
  4. Step 4: Simplify right side
    139,986.80x = 14,744,796,314.83
  5. Step 5: Solve for x
    x = 14,744,796,314.83/139,986.80
  6. Step 6: Final answer
    x = 105,329.90

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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.