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Finding the Fourth Proportional to 136,888.68, 188,904.37 and 76,460.17

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Solution

The fourth proportional to 136,888.68, 188,904.37 and 76,460.17 is: 105,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,888.68 : 188,904.37 = 76,460.17 : x
  2. Step 2: Convert to fraction form
    136,888.68/188,904.37 = 76,460.17/x
  3. Step 3: Cross multiply
    136,888.68x = 188,904.37 × 76,460.17
  4. Step 4: Simplify right side
    136,888.68x = 14,443,660,243.94
  5. Step 5: Solve for x
    x = 14,443,660,243.94/136,888.68
  6. Step 6: Final answer
    x = 105,513.91

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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.