Home / 115,128.40-172,692.60-36,266.80

Finding the Fourth Proportional to 115,128.40, 172,692.60 and 36,266.80

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Solution

The fourth proportional to 115,128.40, 172,692.60 and 36,266.80 is: 54,400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,128.40 : 172,692.60 = 36,266.80 : x
  2. Step 2: Convert to fraction form
    115,128.40/172,692.60 = 36,266.80/x
  3. Step 3: Cross multiply
    115,128.40x = 172,692.60 × 36,266.80
  4. Step 4: Simplify right side
    115,128.40x = 6,263,007,985.68
  5. Step 5: Solve for x
    x = 6,263,007,985.68/115,128.40
  6. Step 6: Final answer
    x = 54,400.20

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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.