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Finding the Fourth Proportional to 105,392.92, 158,151.74 and 38,879.80

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Solution

The fourth proportional to 105,392.92, 158,151.74 and 38,879.80 is: 58,342.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.92 : 158,151.74 = 38,879.80 : x
  2. Step 2: Convert to fraction form
    105,392.92/158,151.74 = 38,879.80/x
  3. Step 3: Cross multiply
    105,392.92x = 158,151.74 × 38,879.80
  4. Step 4: Simplify right side
    105,392.92x = 6,148,908,020.85
  5. Step 5: Solve for x
    x = 6,148,908,020.85/105,392.92
  6. Step 6: Final answer
    x = 58,342.70

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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.