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Finding the Fourth Proportional to 133,505.70, 200,258.55 and 128,840.10

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Solution

The fourth proportional to 133,505.70, 200,258.55 and 128,840.10 is: 193,260.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,505.70 : 200,258.55 = 128,840.10 : x
  2. Step 2: Convert to fraction form
    133,505.70/200,258.55 = 128,840.10/x
  3. Step 3: Cross multiply
    133,505.70x = 200,258.55 × 128,840.10
  4. Step 4: Simplify right side
    133,505.70x = 25,801,331,607.86
  5. Step 5: Solve for x
    x = 25,801,331,607.86/133,505.70
  6. Step 6: Final answer
    x = 193,260.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.