Home / 112,828.05-155,699.33-61,839.68

Finding the Fourth Proportional to 112,828.05, 155,699.33 and 61,839.68

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Solution

The fourth proportional to 112,828.05, 155,699.33 and 61,839.68 is: 85,336.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,828.05 : 155,699.33 = 61,839.68 : x
  2. Step 2: Convert to fraction form
    112,828.05/155,699.33 = 61,839.68/x
  3. Step 3: Cross multiply
    112,828.05x = 155,699.33 × 61,839.68
  4. Step 4: Simplify right side
    112,828.05x = 9,628,395,655.72
  5. Step 5: Solve for x
    x = 9,628,395,655.72/112,828.05
  6. Step 6: Final answer
    x = 85,336.90

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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.