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Finding the Fourth Proportional to 118,230.70, 177,000.45 and 105,789.10

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Solution

The fourth proportional to 118,230.70, 177,000.45 and 105,789.10 is: 158,374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,230.70 : 177,000.45 = 105,789.10 : x
  2. Step 2: Convert to fraction form
    118,230.70/177,000.45 = 105,789.10/x
  3. Step 3: Cross multiply
    118,230.70x = 177,000.45 × 105,789.10
  4. Step 4: Simplify right side
    118,230.70x = 18,724,718,305.10
  5. Step 5: Solve for x
    x = 18,724,718,305.10/118,230.70
  6. Step 6: Final answer
    x = 158,374.42

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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.