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Finding the Fourth Proportional to 144,307.96, 199,144.40 and 80,645.74

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Solution

The fourth proportional to 144,307.96, 199,144.40 and 80,645.74 is: 111,290.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,307.96 : 199,144.40 = 80,645.74 : x
  2. Step 2: Convert to fraction form
    144,307.96/199,144.40 = 80,645.74/x
  3. Step 3: Cross multiply
    144,307.96x = 199,144.40 × 80,645.74
  4. Step 4: Simplify right side
    144,307.96x = 16,060,147,504.86
  5. Step 5: Solve for x
    x = 16,060,147,504.86/144,307.96
  6. Step 6: Final answer
    x = 111,290.79

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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.