Home / 139,079.03-208,548.68-68,007.20

Finding the Fourth Proportional to 139,079.03, 208,548.68 and 68,007.20

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Solution

The fourth proportional to 139,079.03, 208,548.68 and 68,007.20 is: 101,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,079.03 : 208,548.68 = 68,007.20 : x
  2. Step 2: Convert to fraction form
    139,079.03/208,548.68 = 68,007.20/x
  3. Step 3: Cross multiply
    139,079.03x = 208,548.68 × 68,007.20
  4. Step 4: Simplify right side
    139,079.03x = 14,182,810,407.72
  5. Step 5: Solve for x
    x = 14,182,810,407.72/139,079.03
  6. Step 6: Final answer
    x = 101,976.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.