Home / 209,975.76-314,461.85-115,063.20

Finding the Fourth Proportional to 209,975.76, 314,461.85 and 115,063.20

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Solution

The fourth proportional to 209,975.76, 314,461.85 and 115,063.20 is: 172,319.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,975.76 : 314,461.85 = 115,063.20 : x
  2. Step 2: Convert to fraction form
    209,975.76/314,461.85 = 115,063.20/x
  3. Step 3: Cross multiply
    209,975.76x = 314,461.85 × 115,063.20
  4. Step 4: Simplify right side
    209,975.76x = 36,182,986,163.60
  5. Step 5: Solve for x
    x = 36,182,986,163.60/209,975.76
  6. Step 6: Final answer
    x = 172,319.82

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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.