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Finding the Fourth Proportional to 157,218.60, 235,827.90 and 126,114.60

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Solution

The fourth proportional to 157,218.60, 235,827.90 and 126,114.60 is: 189,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,218.60 : 235,827.90 = 126,114.60 : x
  2. Step 2: Convert to fraction form
    157,218.60/235,827.90 = 126,114.60/x
  3. Step 3: Cross multiply
    157,218.60x = 235,827.90 × 126,114.60
  4. Step 4: Simplify right side
    157,218.60x = 29,741,341,277.34
  5. Step 5: Solve for x
    x = 29,741,341,277.34/157,218.60
  6. Step 6: Final answer
    x = 189,171.90

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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.