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Finding the Fourth Proportional to 105,422.69, 145,486.76 and 60,099.86

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Solution

The fourth proportional to 105,422.69, 145,486.76 and 60,099.86 is: 82,939.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,422.69 : 145,486.76 = 60,099.86 : x
  2. Step 2: Convert to fraction form
    105,422.69/145,486.76 = 60,099.86/x
  3. Step 3: Cross multiply
    105,422.69x = 145,486.76 × 60,099.86
  4. Step 4: Simplify right side
    105,422.69x = 8,743,732,879.92
  5. Step 5: Solve for x
    x = 8,743,732,879.92/105,422.69
  6. Step 6: Final answer
    x = 82,939.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.