Home / 131,087.64-180,873.78-76,629.23

Finding the Fourth Proportional to 131,087.64, 180,873.78 and 76,629.23

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Solution

The fourth proportional to 131,087.64, 180,873.78 and 76,629.23 is: 105,732.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,087.64 : 180,873.78 = 76,629.23 : x
  2. Step 2: Convert to fraction form
    131,087.64/180,873.78 = 76,629.23/x
  3. Step 3: Cross multiply
    131,087.64x = 180,873.78 × 76,629.23
  4. Step 4: Simplify right side
    131,087.64x = 13,860,219,511.93
  5. Step 5: Solve for x
    x = 13,860,219,511.93/131,087.64
  6. Step 6: Final answer
    x = 105,732.47

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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.