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Finding the Fourth Proportional to 125,869.92, 188,692.55 and 46,987.80

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Solution

The fourth proportional to 125,869.92, 188,692.55 and 46,987.80 is: 70,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,869.92 : 188,692.55 = 46,987.80 : x
  2. Step 2: Convert to fraction form
    125,869.92/188,692.55 = 46,987.80/x
  3. Step 3: Cross multiply
    125,869.92x = 188,692.55 × 46,987.80
  4. Step 4: Simplify right side
    125,869.92x = 8,866,247,800.89
  5. Step 5: Solve for x
    x = 8,866,247,800.89/125,869.92
  6. Step 6: Final answer
    x = 70,439.77

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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.