Home / 130,429.96-179,929.26-85,087

Finding the Fourth Proportional to 130,429.96, 179,929.26 and 85,087

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Solution

The fourth proportional to 130,429.96, 179,929.26 and 85,087 is: 117,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,429.96 : 179,929.26 = 85,087 : x
  2. Step 2: Convert to fraction form
    130,429.96/179,929.26 = 85,087/x
  3. Step 3: Cross multiply
    130,429.96x = 179,929.26 × 85,087
  4. Step 4: Simplify right side
    130,429.96x = 15,309,640,945.62
  5. Step 5: Solve for x
    x = 15,309,640,945.62/130,429.96
  6. Step 6: Final answer
    x = 117,378.25

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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.