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Finding the Fourth Proportional to 101,276.40, 139,760.64 and 55,957.44

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Solution

The fourth proportional to 101,276.40, 139,760.64 and 55,957.44 is: 77,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,276.40 : 139,760.64 = 55,957.44 : x
  2. Step 2: Convert to fraction form
    101,276.40/139,760.64 = 55,957.44/x
  3. Step 3: Cross multiply
    101,276.40x = 139,760.64 × 55,957.44
  4. Step 4: Simplify right side
    101,276.40x = 7,820,647,627.16
  5. Step 5: Solve for x
    x = 7,820,647,627.16/101,276.40
  6. Step 6: Final answer
    x = 77,220.83

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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.