Home / 120,512.64-180,696.07-53,940.36

Finding the Fourth Proportional to 120,512.64, 180,696.07 and 53,940.36

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Solution

The fourth proportional to 120,512.64, 180,696.07 and 53,940.36 is: 80,877.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,512.64 : 180,696.07 = 53,940.36 : x
  2. Step 2: Convert to fraction form
    120,512.64/180,696.07 = 53,940.36/x
  3. Step 3: Cross multiply
    120,512.64x = 180,696.07 × 53,940.36
  4. Step 4: Simplify right side
    120,512.64x = 9,746,811,508.01
  5. Step 5: Solve for x
    x = 9,746,811,508.01/120,512.64
  6. Step 6: Final answer
    x = 80,877.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.