Home / 112,942.40-155,860.78-61,955.60

Finding the Fourth Proportional to 112,942.40, 155,860.78 and 61,955.60

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Solution

The fourth proportional to 112,942.40, 155,860.78 and 61,955.60 is: 85,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,942.40 : 155,860.78 = 61,955.60 : x
  2. Step 2: Convert to fraction form
    112,942.40/155,860.78 = 61,955.60/x
  3. Step 3: Cross multiply
    112,942.40x = 155,860.78 × 61,955.60
  4. Step 4: Simplify right side
    112,942.40x = 9,656,448,141.37
  5. Step 5: Solve for x
    x = 9,656,448,141.37/112,942.40
  6. Step 6: Final answer
    x = 85,498.88

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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.