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Finding the Fourth Proportional to 100,851.60, 151,277.40 and 85,299.60

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Solution

The fourth proportional to 100,851.60, 151,277.40 and 85,299.60 is: 127,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,851.60 : 151,277.40 = 85,299.60 : x
  2. Step 2: Convert to fraction form
    100,851.60/151,277.40 = 85,299.60/x
  3. Step 3: Cross multiply
    100,851.60x = 151,277.40 × 85,299.60
  4. Step 4: Simplify right side
    100,851.60x = 12,903,901,709.04
  5. Step 5: Solve for x
    x = 12,903,901,709.04/100,851.60
  6. Step 6: Final answer
    x = 127,949.40

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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.