Home / 129,995.10-179,291.31-84,687.36

Finding the Fourth Proportional to 129,995.10, 179,291.31 and 84,687.36

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Solution

The fourth proportional to 129,995.10, 179,291.31 and 84,687.36 is: 116,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,995.10 : 179,291.31 = 84,687.36 : x
  2. Step 2: Convert to fraction form
    129,995.10/179,291.31 = 84,687.36/x
  3. Step 3: Cross multiply
    129,995.10x = 179,291.31 × 84,687.36
  4. Step 4: Simplify right side
    129,995.10x = 15,183,707,714.84
  5. Step 5: Solve for x
    x = 15,183,707,714.84/129,995.10
  6. Step 6: Final answer
    x = 116,802.15

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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.