Home / 139,907.44-193,072.28-76,245.20

Finding the Fourth Proportional to 139,907.44, 193,072.28 and 76,245.20

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Solution

The fourth proportional to 139,907.44, 193,072.28 and 76,245.20 is: 105,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,907.44 : 193,072.28 = 76,245.20 : x
  2. Step 2: Convert to fraction form
    139,907.44/193,072.28 = 76,245.20/x
  3. Step 3: Cross multiply
    139,907.44x = 193,072.28 × 76,245.20
  4. Step 4: Simplify right side
    139,907.44x = 14,720,834,603.06
  5. Step 5: Solve for x
    x = 14,720,834,603.06/139,907.44
  6. Step 6: Final answer
    x = 105,218.38

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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.