Home / 136,051.03-187,696.56-78,679.81

Finding the Fourth Proportional to 136,051.03, 187,696.56 and 78,679.81

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Solution

The fourth proportional to 136,051.03, 187,696.56 and 78,679.81 is: 108,546.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,051.03 : 187,696.56 = 78,679.81 : x
  2. Step 2: Convert to fraction form
    136,051.03/187,696.56 = 78,679.81/x
  3. Step 3: Cross multiply
    136,051.03x = 187,696.56 × 78,679.81
  4. Step 4: Simplify right side
    136,051.03x = 14,767,929,678.45
  5. Step 5: Solve for x
    x = 14,767,929,678.45/136,051.03
  6. Step 6: Final answer
    x = 108,546.99

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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.