Home / 87,185.34-120,324.33-51,386.94

Finding the Fourth Proportional to 87,185.34, 120,324.33 and 51,386.94

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Solution

The fourth proportional to 87,185.34, 120,324.33 and 51,386.94 is: 70,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,185.34 : 120,324.33 = 51,386.94 : x
  2. Step 2: Convert to fraction form
    87,185.34/120,324.33 = 51,386.94/x
  3. Step 3: Cross multiply
    87,185.34x = 120,324.33 × 51,386.94
  4. Step 4: Simplify right side
    87,185.34x = 6,183,099,126.25
  5. Step 5: Solve for x
    x = 6,183,099,126.25/87,185.34
  6. Step 6: Final answer
    x = 70,919.02

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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.