Home / 209,930.33-314,863.02-76,779.45

Finding the Fourth Proportional to 209,930.33, 314,863.02 and 76,779.45

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Solution

The fourth proportional to 209,930.33, 314,863.02 and 76,779.45 is: 115,157.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,930.33 : 314,863.02 = 76,779.45 : x
  2. Step 2: Convert to fraction form
    209,930.33/314,863.02 = 76,779.45/x
  3. Step 3: Cross multiply
    209,930.33x = 314,863.02 × 76,779.45
  4. Step 4: Simplify right side
    209,930.33x = 24,175,008,118.57
  5. Step 5: Solve for x
    x = 24,175,008,118.57/209,930.33
  6. Step 6: Final answer
    x = 115,157.29

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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.