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Finding the Fourth Proportional to 77,140.92, 106,999.80 and 75,093.66

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Solution

The fourth proportional to 77,140.92, 106,999.80 and 75,093.66 is: 104,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,140.92 : 106,999.80 = 75,093.66 : x
  2. Step 2: Convert to fraction form
    77,140.92/106,999.80 = 75,093.66/x
  3. Step 3: Cross multiply
    77,140.92x = 106,999.80 × 75,093.66
  4. Step 4: Simplify right side
    77,140.92x = 8,035,006,601.27
  5. Step 5: Solve for x
    x = 8,035,006,601.27/77,140.92
  6. Step 6: Final answer
    x = 104,160.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.