Home / 112,807.09-155,673.96-61,811.72

Finding the Fourth Proportional to 112,807.09, 155,673.96 and 61,811.72

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Solution

The fourth proportional to 112,807.09, 155,673.96 and 61,811.72 is: 85,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,807.09 : 155,673.96 = 61,811.72 : x
  2. Step 2: Convert to fraction form
    112,807.09/155,673.96 = 61,811.72/x
  3. Step 3: Cross multiply
    112,807.09x = 155,673.96 × 61,811.72
  4. Step 4: Simplify right side
    112,807.09x = 9,622,474,448.44
  5. Step 5: Solve for x
    x = 9,622,474,448.44/112,807.09
  6. Step 6: Final answer
    x = 85,300.27

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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.