Home / 120,865.63-181,247.19-57,612.58

Finding the Fourth Proportional to 120,865.63, 181,247.19 and 57,612.58

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Solution

The fourth proportional to 120,865.63, 181,247.19 and 57,612.58 is: 86,394.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,865.63 : 181,247.19 = 57,612.58 : x
  2. Step 2: Convert to fraction form
    120,865.63/181,247.19 = 57,612.58/x
  3. Step 3: Cross multiply
    120,865.63x = 181,247.19 × 57,612.58
  4. Step 4: Simplify right side
    120,865.63x = 10,442,117,945.59
  5. Step 5: Solve for x
    x = 10,442,117,945.59/120,865.63
  6. Step 6: Final answer
    x = 86,394.44

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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.