Home / 159,015.34-219,431.89-87,395.42

Finding the Fourth Proportional to 159,015.34, 219,431.89 and 87,395.42

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Solution

The fourth proportional to 159,015.34, 219,431.89 and 87,395.42 is: 120,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,015.34 : 219,431.89 = 87,395.42 : x
  2. Step 2: Convert to fraction form
    159,015.34/219,431.89 = 87,395.42/x
  3. Step 3: Cross multiply
    159,015.34x = 219,431.89 × 87,395.42
  4. Step 4: Simplify right side
    159,015.34x = 19,177,343,091.57
  5. Step 5: Solve for x
    x = 19,177,343,091.57/159,015.34
  6. Step 6: Final answer
    x = 120,600.58

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1.5x scale

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.