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Finding the Fourth Proportional to 118,666.85, 178,123.37 and 79,497.68

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Solution

The fourth proportional to 118,666.85, 178,123.37 and 79,497.68 is: 119,328.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,666.85 : 178,123.37 = 79,497.68 : x
  2. Step 2: Convert to fraction form
    118,666.85/178,123.37 = 79,497.68/x
  3. Step 3: Cross multiply
    118,666.85x = 178,123.37 × 79,497.68
  4. Step 4: Simplify right side
    118,666.85x = 14,160,394,668.78
  5. Step 5: Solve for x
    x = 14,160,394,668.78/118,666.85
  6. Step 6: Final answer
    x = 119,328.98

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1.5x scale

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.