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Finding the Fourth Proportional to 135,008.54, 186,364.90 and 89,060.88

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Solution

The fourth proportional to 135,008.54, 186,364.90 and 89,060.88 is: 122,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,008.54 : 186,364.90 = 89,060.88 : x
  2. Step 2: Convert to fraction form
    135,008.54/186,364.90 = 89,060.88/x
  3. Step 3: Cross multiply
    135,008.54x = 186,364.90 × 89,060.88
  4. Step 4: Simplify right side
    135,008.54x = 16,597,821,995.11
  5. Step 5: Solve for x
    x = 16,597,821,995.11/135,008.54
  6. Step 6: Final answer
    x = 122,939.05

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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.