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Finding the Fourth Proportional to 100,572.50, 150,858.75 and 25,692.81

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Solution

The fourth proportional to 100,572.50, 150,858.75 and 25,692.81 is: 38,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,572.50 : 150,858.75 = 25,692.81 : x
  2. Step 2: Convert to fraction form
    100,572.50/150,858.75 = 25,692.81/x
  3. Step 3: Cross multiply
    100,572.50x = 150,858.75 × 25,692.81
  4. Step 4: Simplify right side
    100,572.50x = 3,875,985,200.59
  5. Step 5: Solve for x
    x = 3,875,985,200.59/100,572.50
  6. Step 6: Final answer
    x = 38,539.21

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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.