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Finding the Fourth Proportional to 100,015.40, 149,999.10 and 57,804.20

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Solution

The fourth proportional to 100,015.40, 149,999.10 and 57,804.20 is: 86,692.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,015.40 : 149,999.10 = 57,804.20 : x
  2. Step 2: Convert to fraction form
    100,015.40/149,999.10 = 57,804.20/x
  3. Step 3: Cross multiply
    100,015.40x = 149,999.10 × 57,804.20
  4. Step 4: Simplify right side
    100,015.40x = 8,670,577,976.22
  5. Step 5: Solve for x
    x = 8,670,577,976.22/100,015.40
  6. Step 6: Final answer
    x = 86,692.43

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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.