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Finding the Fourth Proportional to 133,438.60, 200,157.90 and 118,923.40

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Solution

The fourth proportional to 133,438.60, 200,157.90 and 118,923.40 is: 178,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,438.60 : 200,157.90 = 118,923.40 : x
  2. Step 2: Convert to fraction form
    133,438.60/200,157.90 = 118,923.40/x
  3. Step 3: Cross multiply
    133,438.60x = 200,157.90 × 118,923.40
  4. Step 4: Simplify right side
    133,438.60x = 23,803,458,004.86
  5. Step 5: Solve for x
    x = 23,803,458,004.86/133,438.60
  6. Step 6: Final answer
    x = 178,385.10

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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.