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Finding the Fourth Proportional to 118,658.67, 178,111.03 and 79,489.50

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Solution

The fourth proportional to 118,658.67, 178,111.03 and 79,489.50 is: 119,316.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,658.67 : 178,111.03 = 79,489.50 : x
  2. Step 2: Convert to fraction form
    118,658.67/178,111.03 = 79,489.50/x
  3. Step 3: Cross multiply
    118,658.67x = 178,111.03 × 79,489.50
  4. Step 4: Simplify right side
    118,658.67x = 14,157,956,321.74
  5. Step 5: Solve for x
    x = 14,157,956,321.74/118,658.67
  6. Step 6: Final answer
    x = 119,316.66

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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.