Home / 158,767.79-219,107.31-87,147.05

Finding the Fourth Proportional to 158,767.79, 219,107.31 and 87,147.05

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Solution

The fourth proportional to 158,767.79, 219,107.31 and 87,147.05 is: 120,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,767.79 : 219,107.31 = 87,147.05 : x
  2. Step 2: Convert to fraction form
    158,767.79/219,107.31 = 87,147.05/x
  3. Step 3: Cross multiply
    158,767.79x = 219,107.31 × 87,147.05
  4. Step 4: Simplify right side
    158,767.79x = 19,094,555,699.94
  5. Step 5: Solve for x
    x = 19,094,555,699.94/158,767.79
  6. Step 6: Final answer
    x = 120,267.19

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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.