Home / 219,673.24-303,139.45-129,038.50

Finding the Fourth Proportional to 219,673.24, 303,139.45 and 129,038.50

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Solution

The fourth proportional to 219,673.24, 303,139.45 and 129,038.50 is: 178,067.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,673.24 : 303,139.45 = 129,038.50 : x
  2. Step 2: Convert to fraction form
    219,673.24/303,139.45 = 129,038.50/x
  3. Step 3: Cross multiply
    219,673.24x = 303,139.45 × 129,038.50
  4. Step 4: Simplify right side
    219,673.24x = 39,116,659,918.83
  5. Step 5: Solve for x
    x = 39,116,659,918.83/219,673.24
  6. Step 6: Final answer
    x = 178,067.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.