Home / 100,881.20-151,305.60-30,744.20

Finding the Fourth Proportional to 100,881.20, 151,305.60 and 30,744.20

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Solution

The fourth proportional to 100,881.20, 151,305.60 and 30,744.20 is: 46,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,881.20 : 151,305.60 = 30,744.20 : x
  2. Step 2: Convert to fraction form
    100,881.20/151,305.60 = 30,744.20/x
  3. Step 3: Cross multiply
    100,881.20x = 151,305.60 × 30,744.20
  4. Step 4: Simplify right side
    100,881.20x = 4,651,769,627.52
  5. Step 5: Solve for x
    x = 4,651,769,627.52/100,881.20
  6. Step 6: Final answer
    x = 46,111.36

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1.5x scale

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.