Home / 138,098.24-190,601.72-86,439.29

Finding the Fourth Proportional to 138,098.24, 190,601.72 and 86,439.29

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Solution

The fourth proportional to 138,098.24, 190,601.72 and 86,439.29 is: 119,302.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,098.24 : 190,601.72 = 86,439.29 : x
  2. Step 2: Convert to fraction form
    138,098.24/190,601.72 = 86,439.29/x
  3. Step 3: Cross multiply
    138,098.24x = 190,601.72 × 86,439.29
  4. Step 4: Simplify right side
    138,098.24x = 16,475,475,964.37
  5. Step 5: Solve for x
    x = 16,475,475,964.37/138,098.24
  6. Step 6: Final answer
    x = 119,302.58

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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.