Home / 159,093.09-219,549.29-87,477.72

Finding the Fourth Proportional to 159,093.09, 219,549.29 and 87,477.72

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Solution

The fourth proportional to 159,093.09, 219,549.29 and 87,477.72 is: 120,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,093.09 : 219,549.29 = 87,477.72 : x
  2. Step 2: Convert to fraction form
    159,093.09/219,549.29 = 87,477.72/x
  3. Step 3: Cross multiply
    159,093.09x = 219,549.29 × 87,477.72
  4. Step 4: Simplify right side
    159,093.09x = 19,205,671,291.09
  5. Step 5: Solve for x
    x = 19,205,671,291.09/159,093.09
  6. Step 6: Final answer
    x = 120,719.71

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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.