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Finding the Fourth Proportional to 100,802.52, 139,104.91 and 54,860.22

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Solution

The fourth proportional to 100,802.52, 139,104.91 and 54,860.22 is: 75,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,802.52 : 139,104.91 = 54,860.22 : x
  2. Step 2: Convert to fraction form
    100,802.52/139,104.91 = 54,860.22/x
  3. Step 3: Cross multiply
    100,802.52x = 139,104.91 × 54,860.22
  4. Step 4: Simplify right side
    100,802.52x = 7,631,325,965.68
  5. Step 5: Solve for x
    x = 7,631,325,965.68/100,802.52
  6. Step 6: Final answer
    x = 75,705.71

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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.