Home / 90,189.94-124,512.17-54,389.02

Finding the Fourth Proportional to 90,189.94, 124,512.17 and 54,389.02

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Solution

The fourth proportional to 90,189.94, 124,512.17 and 54,389.02 is: 75,087.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,189.94 : 124,512.17 = 54,389.02 : x
  2. Step 2: Convert to fraction form
    90,189.94/124,512.17 = 54,389.02/x
  3. Step 3: Cross multiply
    90,189.94x = 124,512.17 × 54,389.02
  4. Step 4: Simplify right side
    90,189.94x = 6,772,094,904.37
  5. Step 5: Solve for x
    x = 6,772,094,904.37/90,189.94
  6. Step 6: Final answer
    x = 75,087.03

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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.