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Finding the Fourth Proportional to 118,833.62, 178,130.41 and 74,491.45

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Solution

The fourth proportional to 118,833.62, 178,130.41 and 74,491.45 is: 111,661.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.62 : 178,130.41 = 74,491.45 : x
  2. Step 2: Convert to fraction form
    118,833.62/178,130.41 = 74,491.45/x
  3. Step 3: Cross multiply
    118,833.62x = 178,130.41 × 74,491.45
  4. Step 4: Simplify right side
    118,833.62x = 13,269,191,898.44
  5. Step 5: Solve for x
    x = 13,269,191,898.44/118,833.62
  6. Step 6: Final answer
    x = 111,661.94

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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.