Home / 208,220.90-312,477.15-89,977.10

Finding the Fourth Proportional to 208,220.90, 312,477.15 and 89,977.10

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Solution

The fourth proportional to 208,220.90, 312,477.15 and 89,977.10 is: 135,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,220.90 : 312,477.15 = 89,977.10 : x
  2. Step 2: Convert to fraction form
    208,220.90/312,477.15 = 89,977.10/x
  3. Step 3: Cross multiply
    208,220.90x = 312,477.15 × 89,977.10
  4. Step 4: Simplify right side
    208,220.90x = 28,115,787,773.27
  5. Step 5: Solve for x
    x = 28,115,787,773.27/208,220.90
  6. Step 6: Final answer
    x = 135,028.65

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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.