Home / 120,204.64-165,915.84-69,913.36

Finding the Fourth Proportional to 120,204.64, 165,915.84 and 69,913.36

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Solution

The fourth proportional to 120,204.64, 165,915.84 and 69,913.36 is: 96,499.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,204.64 : 165,915.84 = 69,913.36 : x
  2. Step 2: Convert to fraction form
    120,204.64/165,915.84 = 69,913.36/x
  3. Step 3: Cross multiply
    120,204.64x = 165,915.84 × 69,913.36
  4. Step 4: Simplify right side
    120,204.64x = 11,599,733,851.62
  5. Step 5: Solve for x
    x = 11,599,733,851.62/120,204.64
  6. Step 6: Final answer
    x = 96,499.88

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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.