Home / 255,921.63-383,927.60-87,402.49

Finding the Fourth Proportional to 255,921.63, 383,927.60 and 87,402.49

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Solution

The fourth proportional to 255,921.63, 383,927.60 and 87,402.49 is: 131,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,921.63 : 383,927.60 = 87,402.49 : x
  2. Step 2: Convert to fraction form
    255,921.63/383,927.60 = 87,402.49/x
  3. Step 3: Cross multiply
    255,921.63x = 383,927.60 × 87,402.49
  4. Step 4: Simplify right side
    255,921.63x = 33,556,229,146.37
  5. Step 5: Solve for x
    x = 33,556,229,146.37/255,921.63
  6. Step 6: Final answer
    x = 131,119.16

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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.