Home / 139,921.36-209,749.80-55,733.50

Finding the Fourth Proportional to 139,921.36, 209,749.80 and 55,733.50

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Solution

The fourth proportional to 139,921.36, 209,749.80 and 55,733.50 is: 83,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,921.36 : 209,749.80 = 55,733.50 : x
  2. Step 2: Convert to fraction form
    139,921.36/209,749.80 = 55,733.50/x
  3. Step 3: Cross multiply
    139,921.36x = 209,749.80 × 55,733.50
  4. Step 4: Simplify right side
    139,921.36x = 11,690,090,949.49
  5. Step 5: Solve for x
    x = 11,690,090,949.49/139,921.36
  6. Step 6: Final answer
    x = 83,547.58

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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.