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Finding the Fourth Proportional to 118,630.98, 163,710.77 and 64,915.99

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Solution

The fourth proportional to 118,630.98, 163,710.77 and 64,915.99 is: 89,584.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,630.98 : 163,710.77 = 64,915.99 : x
  2. Step 2: Convert to fraction form
    118,630.98/163,710.77 = 64,915.99/x
  3. Step 3: Cross multiply
    118,630.98x = 163,710.77 × 64,915.99
  4. Step 4: Simplify right side
    118,630.98x = 10,627,445,974.36
  5. Step 5: Solve for x
    x = 10,627,445,974.36/118,630.98
  6. Step 6: Final answer
    x = 89,584.07

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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.