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Finding the Fourth Proportional to 100,951.80, 151,427.70 and 99,007.80

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Solution

The fourth proportional to 100,951.80, 151,427.70 and 99,007.80 is: 148,511.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,951.80 : 151,427.70 = 99,007.80 : x
  2. Step 2: Convert to fraction form
    100,951.80/151,427.70 = 99,007.80/x
  3. Step 3: Cross multiply
    100,951.80x = 151,427.70 × 99,007.80
  4. Step 4: Simplify right side
    100,951.80x = 14,992,523,436.06
  5. Step 5: Solve for x
    x = 14,992,523,436.06/100,951.80
  6. Step 6: Final answer
    x = 148,511.70

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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.