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Finding the Fourth Proportional to 118,840.62, 164,000.16 and 65,127.60

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Solution

The fourth proportional to 118,840.62, 164,000.16 and 65,127.60 is: 89,876.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,840.62 : 164,000.16 = 65,127.60 : x
  2. Step 2: Convert to fraction form
    118,840.62/164,000.16 = 65,127.60/x
  3. Step 3: Cross multiply
    118,840.62x = 164,000.16 × 65,127.60
  4. Step 4: Simplify right side
    118,840.62x = 10,680,936,820.42
  5. Step 5: Solve for x
    x = 10,680,936,820.42/118,840.62
  6. Step 6: Final answer
    x = 89,876.15

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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.