Home / 159,019.01-219,436.94-87,399.09

Finding the Fourth Proportional to 159,019.01, 219,436.94 and 87,399.09

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Solution

The fourth proportional to 159,019.01, 219,436.94 and 87,399.09 is: 120,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,019.01 : 219,436.94 = 87,399.09 : x
  2. Step 2: Convert to fraction form
    159,019.01/219,436.94 = 87,399.09/x
  3. Step 3: Cross multiply
    159,019.01x = 219,436.94 × 87,399.09
  4. Step 4: Simplify right side
    159,019.01x = 19,178,588,431.39
  5. Step 5: Solve for x
    x = 19,178,588,431.39/159,019.01
  6. Step 6: Final answer
    x = 120,605.64

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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.