Home / 100,088.43-138,116.07-54,757.38

Finding the Fourth Proportional to 100,088.43, 138,116.07 and 54,757.38

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Solution

The fourth proportional to 100,088.43, 138,116.07 and 54,757.38 is: 75,561.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,088.43 : 138,116.07 = 54,757.38 : x
  2. Step 2: Convert to fraction form
    100,088.43/138,116.07 = 54,757.38/x
  3. Step 3: Cross multiply
    100,088.43x = 138,116.07 × 54,757.38
  4. Step 4: Simplify right side
    100,088.43x = 7,562,874,647.03
  5. Step 5: Solve for x
    x = 7,562,874,647.03/100,088.43
  6. Step 6: Final answer
    x = 75,561.93

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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.