Home / 129,682.22-179,109.08-87,166.94

Finding the Fourth Proportional to 129,682.22, 179,109.08 and 87,166.94

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Solution

The fourth proportional to 129,682.22, 179,109.08 and 87,166.94 is: 120,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,682.22 : 179,109.08 = 87,166.94 : x
  2. Step 2: Convert to fraction form
    129,682.22/179,109.08 = 87,166.94/x
  3. Step 3: Cross multiply
    129,682.22x = 179,109.08 × 87,166.94
  4. Step 4: Simplify right side
    129,682.22x = 15,612,390,587.28
  5. Step 5: Solve for x
    x = 15,612,390,587.28/129,682.22
  6. Step 6: Final answer
    x = 120,389.60

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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.