Home / 77,135.54-115,383.33-72,411.62

Finding the Fourth Proportional to 77,135.54, 115,383.33 and 72,411.62

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Solution

The fourth proportional to 77,135.54, 115,383.33 and 72,411.62 is: 108,317.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,135.54 : 115,383.33 = 72,411.62 : x
  2. Step 2: Convert to fraction form
    77,135.54/115,383.33 = 72,411.62/x
  3. Step 3: Cross multiply
    77,135.54x = 115,383.33 × 72,411.62
  4. Step 4: Simplify right side
    77,135.54x = 8,355,093,269.38
  5. Step 5: Solve for x
    x = 8,355,093,269.38/77,135.54
  6. Step 6: Final answer
    x = 108,317.05

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1.5x scale

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.