Home / 139,629.36-209,444.04-64,739.64

Finding the Fourth Proportional to 139,629.36, 209,444.04 and 64,739.64

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Solution

The fourth proportional to 139,629.36, 209,444.04 and 64,739.64 is: 97,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,629.36 : 209,444.04 = 64,739.64 : x
  2. Step 2: Convert to fraction form
    139,629.36/209,444.04 = 64,739.64/x
  3. Step 3: Cross multiply
    139,629.36x = 209,444.04 × 64,739.64
  4. Step 4: Simplify right side
    139,629.36x = 13,559,331,921.99
  5. Step 5: Solve for x
    x = 13,559,331,921.99/139,629.36
  6. Step 6: Final answer
    x = 97,109.46

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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.