Home / 125,128.60-187,692.30-42,022.60

Finding the Fourth Proportional to 125,128.60, 187,692.30 and 42,022.60

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Solution

The fourth proportional to 125,128.60, 187,692.30 and 42,022.60 is: 63,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,128.60 : 187,692.30 = 42,022.60 : x
  2. Step 2: Convert to fraction form
    125,128.60/187,692.30 = 42,022.60/x
  3. Step 3: Cross multiply
    125,128.60x = 187,692.30 × 42,022.60
  4. Step 4: Simplify right side
    125,128.60x = 7,887,318,445.98
  5. Step 5: Solve for x
    x = 7,887,318,445.98/125,128.60
  6. Step 6: Final answer
    x = 63,033.70

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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.