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Finding the Fourth Proportional to 118,890.99, 178,335 and 28,934.22

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Solution

The fourth proportional to 118,890.99, 178,335 and 28,934.22 is: 43,400.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,890.99 : 178,335 = 28,934.22 : x
  2. Step 2: Convert to fraction form
    118,890.99/178,335 = 28,934.22/x
  3. Step 3: Cross multiply
    118,890.99x = 178,335 × 28,934.22
  4. Step 4: Simplify right side
    118,890.99x = 5,159,984,123.70
  5. Step 5: Solve for x
    x = 5,159,984,123.70/118,890.99
  6. Step 6: Final answer
    x = 43,400.97

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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.