Home / 100,456.04-150,407.58-81,692.12

Finding the Fourth Proportional to 100,456.04, 150,407.58 and 81,692.12

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Solution

The fourth proportional to 100,456.04, 150,407.58 and 81,692.12 is: 122,313.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,456.04 : 150,407.58 = 81,692.12 : x
  2. Step 2: Convert to fraction form
    100,456.04/150,407.58 = 81,692.12/x
  3. Step 3: Cross multiply
    100,456.04x = 150,407.58 × 81,692.12
  4. Step 4: Simplify right side
    100,456.04x = 12,287,114,074.27
  5. Step 5: Solve for x
    x = 12,287,114,074.27/100,456.04
  6. Step 6: Final answer
    x = 122,313.34

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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.