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Finding the Fourth Proportional to 125,772, 188,602.65 and 66,593.85

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Solution

The fourth proportional to 125,772, 188,602.65 and 66,593.85 is: 99,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,772 : 188,602.65 = 66,593.85 : x
  2. Step 2: Convert to fraction form
    125,772/188,602.65 = 66,593.85/x
  3. Step 3: Cross multiply
    125,772x = 188,602.65 × 66,593.85
  4. Step 4: Simplify right side
    125,772x = 12,559,776,583.70
  5. Step 5: Solve for x
    x = 12,559,776,583.70/125,772
  6. Step 6: Final answer
    x = 99,861.47

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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.