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Finding the Fourth Proportional to 136,173.65, 187,930.98 and 75,755.67

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Solution

The fourth proportional to 136,173.65, 187,930.98 and 75,755.67 is: 104,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,173.65 : 187,930.98 = 75,755.67 : x
  2. Step 2: Convert to fraction form
    136,173.65/187,930.98 = 75,755.67/x
  3. Step 3: Cross multiply
    136,173.65x = 187,930.98 × 75,755.67
  4. Step 4: Simplify right side
    136,173.65x = 14,236,837,303.66
  5. Step 5: Solve for x
    x = 14,236,837,303.66/136,173.65
  6. Step 6: Final answer
    x = 104,549.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.