Home / 132,857.51-183,239.69-85,115.30

Finding the Fourth Proportional to 132,857.51, 183,239.69 and 85,115.30

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Solution

The fourth proportional to 132,857.51, 183,239.69 and 85,115.30 is: 117,392.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,857.51 : 183,239.69 = 85,115.30 : x
  2. Step 2: Convert to fraction form
    132,857.51/183,239.69 = 85,115.30/x
  3. Step 3: Cross multiply
    132,857.51x = 183,239.69 × 85,115.30
  4. Step 4: Simplify right side
    132,857.51x = 15,596,500,760.68
  5. Step 5: Solve for x
    x = 15,596,500,760.68/132,857.51
  6. Step 6: Final answer
    x = 117,392.69

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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.