Home / 125,109.90-187,626.04-45,137.48

Finding the Fourth Proportional to 125,109.90, 187,626.04 and 45,137.48

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Solution

The fourth proportional to 125,109.90, 187,626.04 and 45,137.48 is: 67,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,109.90 : 187,626.04 = 45,137.48 : x
  2. Step 2: Convert to fraction form
    125,109.90/187,626.04 = 45,137.48/x
  3. Step 3: Cross multiply
    125,109.90x = 187,626.04 × 45,137.48
  4. Step 4: Simplify right side
    125,109.90x = 8,468,965,746.27
  5. Step 5: Solve for x
    x = 8,468,965,746.27/125,109.90
  6. Step 6: Final answer
    x = 67,692.21

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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.