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Finding the Fourth Proportional to 118,671.12, 163,766.03 and 64,955.66

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Solution

The fourth proportional to 118,671.12, 163,766.03 and 64,955.66 is: 89,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,671.12 : 163,766.03 = 64,955.66 : x
  2. Step 2: Convert to fraction form
    118,671.12/163,766.03 = 64,955.66/x
  3. Step 3: Cross multiply
    118,671.12x = 163,766.03 × 64,955.66
  4. Step 4: Simplify right side
    118,671.12x = 10,637,529,420.62
  5. Step 5: Solve for x
    x = 10,637,529,420.62/118,671.12
  6. Step 6: Final answer
    x = 89,638.74

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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.