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Finding the Fourth Proportional to 148,897.38, 205,479.75 and 80,914.38

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Solution

The fourth proportional to 148,897.38, 205,479.75 and 80,914.38 is: 111,662.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,897.38 : 205,479.75 = 80,914.38 : x
  2. Step 2: Convert to fraction form
    148,897.38/205,479.75 = 80,914.38/x
  3. Step 3: Cross multiply
    148,897.38x = 205,479.75 × 80,914.38
  4. Step 4: Simplify right side
    148,897.38x = 16,626,266,573.81
  5. Step 5: Solve for x
    x = 16,626,266,573.81/148,897.38
  6. Step 6: Final answer
    x = 111,662.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.