Home / 135,074.22-202,547.72-78,930.55

Finding the Fourth Proportional to 135,074.22, 202,547.72 and 78,930.55

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Solution

The fourth proportional to 135,074.22, 202,547.72 and 78,930.55 is: 118,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,074.22 : 202,547.72 = 78,930.55 : x
  2. Step 2: Convert to fraction form
    135,074.22/202,547.72 = 78,930.55/x
  3. Step 3: Cross multiply
    135,074.22x = 202,547.72 × 78,930.55
  4. Step 4: Simplify right side
    135,074.22x = 15,987,203,391.36
  5. Step 5: Solve for x
    x = 15,987,203,391.36/135,074.22
  6. Step 6: Final answer
    x = 118,358.66

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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.