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Finding the Fourth Proportional to 161,866.90, 242,800.35 and 105,879.70

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Solution

The fourth proportional to 161,866.90, 242,800.35 and 105,879.70 is: 158,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,866.90 : 242,800.35 = 105,879.70 : x
  2. Step 2: Convert to fraction form
    161,866.90/242,800.35 = 105,879.70/x
  3. Step 3: Cross multiply
    161,866.90x = 242,800.35 × 105,879.70
  4. Step 4: Simplify right side
    161,866.90x = 25,707,628,217.90
  5. Step 5: Solve for x
    x = 25,707,628,217.90/161,866.90
  6. Step 6: Final answer
    x = 158,819.55

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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.