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Finding the Fourth Proportional to 118,561.92, 163,656.64 and 68,280.96

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Solution

The fourth proportional to 118,561.92, 163,656.64 and 68,280.96 is: 94,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,561.92 : 163,656.64 = 68,280.96 : x
  2. Step 2: Convert to fraction form
    118,561.92/163,656.64 = 68,280.96/x
  3. Step 3: Cross multiply
    118,561.92x = 163,656.64 × 68,280.96
  4. Step 4: Simplify right side
    118,561.92x = 11,174,632,489.57
  5. Step 5: Solve for x
    x = 11,174,632,489.57/118,561.92
  6. Step 6: Final answer
    x = 94,251.45

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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.