Home / 213,828.66-320,828.85-80,746.47

Finding the Fourth Proportional to 213,828.66, 320,828.85 and 80,746.47

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Solution

The fourth proportional to 213,828.66, 320,828.85 and 80,746.47 is: 121,152.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,828.66 : 320,828.85 = 80,746.47 : x
  2. Step 2: Convert to fraction form
    213,828.66/320,828.85 = 80,746.47/x
  3. Step 3: Cross multiply
    213,828.66x = 320,828.85 × 80,746.47
  4. Step 4: Simplify right side
    213,828.66x = 25,905,797,111.66
  5. Step 5: Solve for x
    x = 25,905,797,111.66/213,828.66
  6. Step 6: Final answer
    x = 121,152.13

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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.