Home / 209,156.68-313,735.90-51,385.16

Finding the Fourth Proportional to 209,156.68, 313,735.90 and 51,385.16

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Solution

The fourth proportional to 209,156.68, 313,735.90 and 51,385.16 is: 77,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,156.68 : 313,735.90 = 51,385.16 : x
  2. Step 2: Convert to fraction form
    209,156.68/313,735.90 = 51,385.16/x
  3. Step 3: Cross multiply
    209,156.68x = 313,735.90 × 51,385.16
  4. Step 4: Simplify right side
    209,156.68x = 16,121,369,419.24
  5. Step 5: Solve for x
    x = 16,121,369,419.24/209,156.68
  6. Step 6: Final answer
    x = 77,077.96

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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.