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Finding the Fourth Proportional to 100,111.20, 150,166.80 and 40,927.20

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Solution

The fourth proportional to 100,111.20, 150,166.80 and 40,927.20 is: 61,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,111.20 : 150,166.80 = 40,927.20 : x
  2. Step 2: Convert to fraction form
    100,111.20/150,166.80 = 40,927.20/x
  3. Step 3: Cross multiply
    100,111.20x = 150,166.80 × 40,927.20
  4. Step 4: Simplify right side
    100,111.20x = 6,145,906,656.96
  5. Step 5: Solve for x
    x = 6,145,906,656.96/100,111.20
  6. Step 6: Final answer
    x = 61,390.80

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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.