Home / 129,466.88-178,719.52-87,050

Finding the Fourth Proportional to 129,466.88, 178,719.52 and 87,050

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Solution

The fourth proportional to 129,466.88, 178,719.52 and 87,050 is: 120,166.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,466.88 : 178,719.52 = 87,050 : x
  2. Step 2: Convert to fraction form
    129,466.88/178,719.52 = 87,050/x
  3. Step 3: Cross multiply
    129,466.88x = 178,719.52 × 87,050
  4. Step 4: Simplify right side
    129,466.88x = 15,557,534,216
  5. Step 5: Solve for x
    x = 15,557,534,216/129,466.88
  6. Step 6: Final answer
    x = 120,166.13

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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.