Home / 132,690.88-183,113.94-78,975.64

Finding the Fourth Proportional to 132,690.88, 183,113.94 and 78,975.64

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Solution

The fourth proportional to 132,690.88, 183,113.94 and 78,975.64 is: 108,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,690.88 : 183,113.94 = 78,975.64 : x
  2. Step 2: Convert to fraction form
    132,690.88/183,113.94 = 78,975.64/x
  3. Step 3: Cross multiply
    132,690.88x = 183,113.94 × 78,975.64
  4. Step 4: Simplify right side
    132,690.88x = 14,461,540,604.42
  5. Step 5: Solve for x
    x = 14,461,540,604.42/132,690.88
  6. Step 6: Final answer
    x = 108,986.70

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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.