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Finding the Fourth Proportional to 168,750.60, 253,125.90 and 75,438.60

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Solution

The fourth proportional to 168,750.60, 253,125.90 and 75,438.60 is: 113,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,750.60 : 253,125.90 = 75,438.60 : x
  2. Step 2: Convert to fraction form
    168,750.60/253,125.90 = 75,438.60/x
  3. Step 3: Cross multiply
    168,750.60x = 253,125.90 × 75,438.60
  4. Step 4: Simplify right side
    168,750.60x = 19,095,463,519.74
  5. Step 5: Solve for x
    x = 19,095,463,519.74/168,750.60
  6. Step 6: Final answer
    x = 113,157.90

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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.