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Finding the Fourth Proportional to 140,447.71, 193,822.44 and 80,020.90

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Solution

The fourth proportional to 140,447.71, 193,822.44 and 80,020.90 is: 110,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,447.71 : 193,822.44 = 80,020.90 : x
  2. Step 2: Convert to fraction form
    140,447.71/193,822.44 = 80,020.90/x
  3. Step 3: Cross multiply
    140,447.71x = 193,822.44 × 80,020.90
  4. Step 4: Simplify right side
    140,447.71x = 15,509,845,688.89
  5. Step 5: Solve for x
    x = 15,509,845,688.89/140,447.71
  6. Step 6: Final answer
    x = 110,431.46

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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.