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Finding the Fourth Proportional to 100,699.19, 151,039.02 and 30,579.11

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Solution

The fourth proportional to 100,699.19, 151,039.02 and 30,579.11 is: 45,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,699.19 : 151,039.02 = 30,579.11 : x
  2. Step 2: Convert to fraction form
    100,699.19/151,039.02 = 30,579.11/x
  3. Step 3: Cross multiply
    100,699.19x = 151,039.02 × 30,579.11
  4. Step 4: Simplify right side
    100,699.19x = 4,618,638,806.87
  5. Step 5: Solve for x
    x = 4,618,638,806.87/100,699.19
  6. Step 6: Final answer
    x = 45,865.70

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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.