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Finding the Fourth Proportional to 101,282.76, 139,763.03 and 55,960.25

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Solution

The fourth proportional to 101,282.76, 139,763.03 and 55,960.25 is: 77,221.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,282.76 : 139,763.03 = 55,960.25 : x
  2. Step 2: Convert to fraction form
    101,282.76/139,763.03 = 55,960.25/x
  3. Step 3: Cross multiply
    101,282.76x = 139,763.03 × 55,960.25
  4. Step 4: Simplify right side
    101,282.76x = 7,821,173,120.94
  5. Step 5: Solve for x
    x = 7,821,173,120.94/101,282.76
  6. Step 6: Final answer
    x = 77,221.17

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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.