Home / 139,079.03-208,395.79-135,388.67

Finding the Fourth Proportional to 139,079.03, 208,395.79 and 135,388.67

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Solution

The fourth proportional to 139,079.03, 208,395.79 and 135,388.67 is: 202,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,079.03 : 208,395.79 = 135,388.67 : x
  2. Step 2: Convert to fraction form
    139,079.03/208,395.79 = 135,388.67/x
  3. Step 3: Cross multiply
    139,079.03x = 208,395.79 × 135,388.67
  4. Step 4: Simplify right side
    139,079.03x = 28,214,427,461.25
  5. Step 5: Solve for x
    x = 28,214,427,461.25/139,079.03
  6. Step 6: Final answer
    x = 202,866.16

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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.