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Finding the Fourth Proportional to 136,573.89, 188,471.29 and 79,224.81

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Solution

The fourth proportional to 136,573.89, 188,471.29 and 79,224.81 is: 109,329.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,573.89 : 188,471.29 = 79,224.81 : x
  2. Step 2: Convert to fraction form
    136,573.89/188,471.29 = 79,224.81/x
  3. Step 3: Cross multiply
    136,573.89x = 188,471.29 × 79,224.81
  4. Step 4: Simplify right side
    136,573.89x = 14,931,602,140.70
  5. Step 5: Solve for x
    x = 14,931,602,140.70/136,573.89
  6. Step 6: Final answer
    x = 109,329.84

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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.