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Finding the Fourth Proportional to 114,509.96, 158,025.30 and 85,778.72

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Solution

The fourth proportional to 114,509.96, 158,025.30 and 85,778.72 is: 118,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,509.96 : 158,025.30 = 85,778.72 : x
  2. Step 2: Convert to fraction form
    114,509.96/158,025.30 = 85,778.72/x
  3. Step 3: Cross multiply
    114,509.96x = 158,025.30 × 85,778.72
  4. Step 4: Simplify right side
    114,509.96x = 13,555,207,961.62
  5. Step 5: Solve for x
    x = 13,555,207,961.62/114,509.96
  6. Step 6: Final answer
    x = 118,375.80

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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.