Home / 109,916.20-164,801.40-39,786.40

Finding the Fourth Proportional to 109,916.20, 164,801.40 and 39,786.40

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Solution

The fourth proportional to 109,916.20, 164,801.40 and 39,786.40 is: 59,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,916.20 : 164,801.40 = 39,786.40 : x
  2. Step 2: Convert to fraction form
    109,916.20/164,801.40 = 39,786.40/x
  3. Step 3: Cross multiply
    109,916.20x = 164,801.40 × 39,786.40
  4. Step 4: Simplify right side
    109,916.20x = 6,556,854,420.96
  5. Step 5: Solve for x
    x = 6,556,854,420.96/109,916.20
  6. Step 6: Final answer
    x = 59,653.21

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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.