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Finding the Fourth Proportional to 125,625.80, 188,147.10 and 85,968.20

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Solution

The fourth proportional to 125,625.80, 188,147.10 and 85,968.20 is: 128,752.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,625.80 : 188,147.10 = 85,968.20 : x
  2. Step 2: Convert to fraction form
    125,625.80/188,147.10 = 85,968.20/x
  3. Step 3: Cross multiply
    125,625.80x = 188,147.10 × 85,968.20
  4. Step 4: Simplify right side
    125,625.80x = 16,174,667,522.22
  5. Step 5: Solve for x
    x = 16,174,667,522.22/125,625.80
  6. Step 6: Final answer
    x = 128,752.75

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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.