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Finding the Fourth Proportional to 118,958.88, 178,088.04 and 79,417.92

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Solution

The fourth proportional to 118,958.88, 178,088.04 and 79,417.92 is: 118,893.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,958.88 : 178,088.04 = 79,417.92 : x
  2. Step 2: Convert to fraction form
    118,958.88/178,088.04 = 79,417.92/x
  3. Step 3: Cross multiply
    118,958.88x = 178,088.04 × 79,417.92
  4. Step 4: Simplify right side
    118,958.88x = 14,143,381,713.68
  5. Step 5: Solve for x
    x = 14,143,381,713.68/118,958.88
  6. Step 6: Final answer
    x = 118,893.03

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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.