Home / 213,426.64-320,139.92-73,186.48

Finding the Fourth Proportional to 213,426.64, 320,139.92 and 73,186.48

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Solution

The fourth proportional to 213,426.64, 320,139.92 and 73,186.48 is: 109,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,426.64 : 320,139.92 = 73,186.48 : x
  2. Step 2: Convert to fraction form
    213,426.64/320,139.92 = 73,186.48/x
  3. Step 3: Cross multiply
    213,426.64x = 320,139.92 × 73,186.48
  4. Step 4: Simplify right side
    213,426.64x = 23,429,913,852.28
  5. Step 5: Solve for x
    x = 23,429,913,852.28/213,426.64
  6. Step 6: Final answer
    x = 109,779.71

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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.