Home / 100,905.10-151,364.85-30,784.30

Finding the Fourth Proportional to 100,905.10, 151,364.85 and 30,784.30

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Solution

The fourth proportional to 100,905.10, 151,364.85 and 30,784.30 is: 46,178.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,905.10 : 151,364.85 = 30,784.30 : x
  2. Step 2: Convert to fraction form
    100,905.10/151,364.85 = 30,784.30/x
  3. Step 3: Cross multiply
    100,905.10x = 151,364.85 × 30,784.30
  4. Step 4: Simplify right side
    100,905.10x = 4,659,660,951.86
  5. Step 5: Solve for x
    x = 4,659,660,951.86/100,905.10
  6. Step 6: Final answer
    x = 46,178.65

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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.