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Finding the Fourth Proportional to 186,676.32, 279,901.86 and 74,373.87

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Solution

The fourth proportional to 186,676.32, 279,901.86 and 74,373.87 is: 111,515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,676.32 : 279,901.86 = 74,373.87 : x
  2. Step 2: Convert to fraction form
    186,676.32/279,901.86 = 74,373.87/x
  3. Step 3: Cross multiply
    186,676.32x = 279,901.86 × 74,373.87
  4. Step 4: Simplify right side
    186,676.32x = 20,817,384,548.40
  5. Step 5: Solve for x
    x = 20,817,384,548.40/186,676.32
  6. Step 6: Final answer
    x = 111,515.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.