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Finding the Fourth Proportional to 101,725.57, 140,380.60 and 56,403.58

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Solution

The fourth proportional to 101,725.57, 140,380.60 and 56,403.58 is: 77,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,725.57 : 140,380.60 = 56,403.58 : x
  2. Step 2: Convert to fraction form
    101,725.57/140,380.60 = 56,403.58/x
  3. Step 3: Cross multiply
    101,725.57x = 140,380.60 × 56,403.58
  4. Step 4: Simplify right side
    101,725.57x = 7,917,968,402.55
  5. Step 5: Solve for x
    x = 7,917,968,402.55/101,725.57
  6. Step 6: Final answer
    x = 77,836.56

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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.