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Finding the Fourth Proportional to 125,513.40, 188,270.10 and 75,649.80

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Solution

The fourth proportional to 125,513.40, 188,270.10 and 75,649.80 is: 113,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,513.40 : 188,270.10 = 75,649.80 : x
  2. Step 2: Convert to fraction form
    125,513.40/188,270.10 = 75,649.80/x
  3. Step 3: Cross multiply
    125,513.40x = 188,270.10 × 75,649.80
  4. Step 4: Simplify right side
    125,513.40x = 14,242,595,410.98
  5. Step 5: Solve for x
    x = 14,242,595,410.98/125,513.40
  6. Step 6: Final answer
    x = 113,474.70

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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.