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Finding the Fourth Proportional to 118,330.86, 163,254.75 and 75,912.30

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Solution

The fourth proportional to 118,330.86, 163,254.75 and 75,912.30 is: 104,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,330.86 : 163,254.75 = 75,912.30 : x
  2. Step 2: Convert to fraction form
    118,330.86/163,254.75 = 75,912.30/x
  3. Step 3: Cross multiply
    118,330.86x = 163,254.75 × 75,912.30
  4. Step 4: Simplify right side
    118,330.86x = 12,393,043,558.43
  5. Step 5: Solve for x
    x = 12,393,043,558.43/118,330.86
  6. Step 6: Final answer
    x = 104,732.13

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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.