Home / 151,101.48-208,503.66-87,427.38

Finding the Fourth Proportional to 151,101.48, 208,503.66 and 87,427.38

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Solution

The fourth proportional to 151,101.48, 208,503.66 and 87,427.38 is: 120,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,101.48 : 208,503.66 = 87,427.38 : x
  2. Step 2: Convert to fraction form
    151,101.48/208,503.66 = 87,427.38/x
  3. Step 3: Cross multiply
    151,101.48x = 208,503.66 × 87,427.38
  4. Step 4: Simplify right side
    151,101.48x = 18,228,928,714.21
  5. Step 5: Solve for x
    x = 18,228,928,714.21/151,101.48
  6. Step 6: Final answer
    x = 120,640.31

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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.