Home / 154,709.36-213,499.26-87,641.36

Finding the Fourth Proportional to 154,709.36, 213,499.26 and 87,641.36

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Solution

The fourth proportional to 154,709.36, 213,499.26 and 87,641.36 is: 120,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,709.36 : 213,499.26 = 87,641.36 : x
  2. Step 2: Convert to fraction form
    154,709.36/213,499.26 = 87,641.36/x
  3. Step 3: Cross multiply
    154,709.36x = 213,499.26 × 87,641.36
  4. Step 4: Simplify right side
    154,709.36x = 18,711,365,505.39
  5. Step 5: Solve for x
    x = 18,711,365,505.39/154,709.36
  6. Step 6: Final answer
    x = 120,945.27

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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.