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Finding the Fourth Proportional to 118,328.84, 163,300.44 and 64,618.86

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Solution

The fourth proportional to 118,328.84, 163,300.44 and 64,618.86 is: 89,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,328.84 : 163,300.44 = 64,618.86 : x
  2. Step 2: Convert to fraction form
    118,328.84/163,300.44 = 64,618.86/x
  3. Step 3: Cross multiply
    118,328.84x = 163,300.44 × 64,618.86
  4. Step 4: Simplify right side
    118,328.84x = 10,552,288,270.30
  5. Step 5: Solve for x
    x = 10,552,288,270.30/118,328.84
  6. Step 6: Final answer
    x = 89,177.65

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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.