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Finding the Fourth Proportional to 118,630.93, 163,710.68 and 64,915.95

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Solution

The fourth proportional to 118,630.93, 163,710.68 and 64,915.95 is: 89,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,630.93 : 163,710.68 = 64,915.95 : x
  2. Step 2: Convert to fraction form
    118,630.93/163,710.68 = 64,915.95/x
  3. Step 3: Cross multiply
    118,630.93x = 163,710.68 × 64,915.95
  4. Step 4: Simplify right side
    118,630.93x = 10,627,434,850.12
  5. Step 5: Solve for x
    x = 10,627,434,850.12/118,630.93
  6. Step 6: Final answer
    x = 89,584.01

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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.