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Finding the Fourth Proportional to 125,313.89, 187,895.76 and 39,887.84

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Solution

The fourth proportional to 125,313.89, 187,895.76 and 39,887.84 is: 59,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,313.89 : 187,895.76 = 39,887.84 : x
  2. Step 2: Convert to fraction form
    125,313.89/187,895.76 = 39,887.84/x
  3. Step 3: Cross multiply
    125,313.89x = 187,895.76 × 39,887.84
  4. Step 4: Simplify right side
    125,313.89x = 7,494,755,072.08
  5. Step 5: Solve for x
    x = 7,494,755,072.08/125,313.89
  6. Step 6: Final answer
    x = 59,807.86

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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.