Home / 139,250.12-208,920.09-64,419.28

Finding the Fourth Proportional to 139,250.12, 208,920.09 and 64,419.28

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Solution

The fourth proportional to 139,250.12, 208,920.09 and 64,419.28 is: 96,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,250.12 : 208,920.09 = 64,419.28 : x
  2. Step 2: Convert to fraction form
    139,250.12/208,920.09 = 64,419.28/x
  3. Step 3: Cross multiply
    139,250.12x = 208,920.09 × 64,419.28
  4. Step 4: Simplify right side
    139,250.12x = 13,458,481,453.24
  5. Step 5: Solve for x
    x = 13,458,481,453.24/139,250.12
  6. Step 6: Final answer
    x = 96,649.69

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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.