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Finding the Fourth Proportional to 115,745.81, 159,733.76 and 67,998.74

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Solution

The fourth proportional to 115,745.81, 159,733.76 and 67,998.74 is: 93,840.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,745.81 : 159,733.76 = 67,998.74 : x
  2. Step 2: Convert to fraction form
    115,745.81/159,733.76 = 67,998.74/x
  3. Step 3: Cross multiply
    115,745.81x = 159,733.76 × 67,998.74
  4. Step 4: Simplify right side
    115,745.81x = 10,861,693,276.80
  5. Step 5: Solve for x
    x = 10,861,693,276.80/115,745.81
  6. Step 6: Final answer
    x = 93,840.92

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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.