Home / 129,936.07-179,306.71-81,564.01

Finding the Fourth Proportional to 129,936.07, 179,306.71 and 81,564.01

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Solution

The fourth proportional to 129,936.07, 179,306.71 and 81,564.01 is: 112,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,936.07 : 179,306.71 = 81,564.01 : x
  2. Step 2: Convert to fraction form
    129,936.07/179,306.71 = 81,564.01/x
  3. Step 3: Cross multiply
    129,936.07x = 179,306.71 × 81,564.01
  4. Step 4: Simplify right side
    129,936.07x = 14,624,974,287.51
  5. Step 5: Solve for x
    x = 14,624,974,287.51/129,936.07
  6. Step 6: Final answer
    x = 112,555.15

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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.