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Finding the Fourth Proportional to 136,103.67, 187,808.76 and 75,664.62

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Solution

The fourth proportional to 136,103.67, 187,808.76 and 75,664.62 is: 104,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,103.67 : 187,808.76 = 75,664.62 : x
  2. Step 2: Convert to fraction form
    136,103.67/187,808.76 = 75,664.62/x
  3. Step 3: Cross multiply
    136,103.67x = 187,808.76 × 75,664.62
  4. Step 4: Simplify right side
    136,103.67x = 14,210,478,458.07
  5. Step 5: Solve for x
    x = 14,210,478,458.07/136,103.67
  6. Step 6: Final answer
    x = 104,409.22

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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.