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Finding the Fourth Proportional to 118,658.17, 178,110.27 and 79,489.00

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Solution

The fourth proportional to 118,658.17, 178,110.27 and 79,489.00 is: 119,315.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,658.17 : 178,110.27 = 79,489.00 : x
  2. Step 2: Convert to fraction form
    118,658.17/178,110.27 = 79,489.00/x
  3. Step 3: Cross multiply
    118,658.17x = 178,110.27 × 79,489.00
  4. Step 4: Simplify right side
    118,658.17x = 14,157,807,197.30
  5. Step 5: Solve for x
    x = 14,157,807,197.30/118,658.17
  6. Step 6: Final answer
    x = 119,315.91

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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.