Home / 159,135.33-219,602.37-87,515.35

Finding the Fourth Proportional to 159,135.33, 219,602.37 and 87,515.35

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Solution

The fourth proportional to 159,135.33, 219,602.37 and 87,515.35 is: 120,768.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,135.33 : 219,602.37 = 87,515.35 : x
  2. Step 2: Convert to fraction form
    159,135.33/219,602.37 = 87,515.35/x
  3. Step 3: Cross multiply
    159,135.33x = 219,602.37 × 87,515.35
  4. Step 4: Simplify right side
    159,135.33x = 19,218,577,722.37
  5. Step 5: Solve for x
    x = 19,218,577,722.37/159,135.33
  6. Step 6: Final answer
    x = 120,768.77

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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.