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Finding the Fourth Proportional to 101,513.10, 151,941.60 and 79,205.70

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Solution

The fourth proportional to 101,513.10, 151,941.60 and 79,205.70 is: 118,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,513.10 : 151,941.60 = 79,205.70 : x
  2. Step 2: Convert to fraction form
    101,513.10/151,941.60 = 79,205.70/x
  3. Step 3: Cross multiply
    101,513.10x = 151,941.60 × 79,205.70
  4. Step 4: Simplify right side
    101,513.10x = 12,034,640,787.12
  5. Step 5: Solve for x
    x = 12,034,640,787.12/101,513.10
  6. Step 6: Final answer
    x = 118,552.59

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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.