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Finding the Fourth Proportional to 118,487.66, 163,512.60 and 64,772.72

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Solution

The fourth proportional to 118,487.66, 163,512.60 and 64,772.72 is: 89,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,487.66 : 163,512.60 = 64,772.72 : x
  2. Step 2: Convert to fraction form
    118,487.66/163,512.60 = 64,772.72/x
  3. Step 3: Cross multiply
    118,487.66x = 163,512.60 × 64,772.72
  4. Step 4: Simplify right side
    118,487.66x = 10,591,155,856.27
  5. Step 5: Solve for x
    x = 10,591,155,856.27/118,487.66
  6. Step 6: Final answer
    x = 89,386.15

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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.