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Finding the Fourth Proportional to 91,553.63, 137,954.25 and 75,278.25

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Solution

The fourth proportional to 91,553.63, 137,954.25 and 75,278.25 is: 113,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,553.63 : 137,954.25 = 75,278.25 : x
  2. Step 2: Convert to fraction form
    91,553.63/137,954.25 = 75,278.25/x
  3. Step 3: Cross multiply
    91,553.63x = 137,954.25 × 75,278.25
  4. Step 4: Simplify right side
    91,553.63x = 10,384,954,431.92
  5. Step 5: Solve for x
    x = 10,384,954,431.92/91,553.63
  6. Step 6: Final answer
    x = 113,430.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.