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Finding the Fourth Proportional to 144,309.72, 199,146.76 and 80,647.48

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Solution

The fourth proportional to 144,309.72, 199,146.76 and 80,647.48 is: 111,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,309.72 : 199,146.76 = 80,647.48 : x
  2. Step 2: Convert to fraction form
    144,309.72/199,146.76 = 80,647.48/x
  3. Step 3: Cross multiply
    144,309.72x = 199,146.76 × 80,647.48
  4. Step 4: Simplify right side
    144,309.72x = 16,060,684,344.16
  5. Step 5: Solve for x
    x = 16,060,684,344.16/144,309.72
  6. Step 6: Final answer
    x = 111,293.16

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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.