Home / 80,851.41-120,644.73-72,445.77

Finding the Fourth Proportional to 80,851.41, 120,644.73 and 72,445.77

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Solution

The fourth proportional to 80,851.41, 120,644.73 and 72,445.77 is: 108,102.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,851.41 : 120,644.73 = 72,445.77 : x
  2. Step 2: Convert to fraction form
    80,851.41/120,644.73 = 72,445.77/x
  3. Step 3: Cross multiply
    80,851.41x = 120,644.73 × 72,445.77
  4. Step 4: Simplify right side
    80,851.41x = 8,740,200,361.29
  5. Step 5: Solve for x
    x = 8,740,200,361.29/80,851.41
  6. Step 6: Final answer
    x = 108,102.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.