Home / 136,146.39-204,006.21-86,120.81

Finding the Fourth Proportional to 136,146.39, 204,006.21 and 86,120.81

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Solution

The fourth proportional to 136,146.39, 204,006.21 and 86,120.81 is: 129,046.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,146.39 : 204,006.21 = 86,120.81 : x
  2. Step 2: Convert to fraction form
    136,146.39/204,006.21 = 86,120.81/x
  3. Step 3: Cross multiply
    136,146.39x = 204,006.21 × 86,120.81
  4. Step 4: Simplify right side
    136,146.39x = 17,569,180,050.23
  5. Step 5: Solve for x
    x = 17,569,180,050.23/136,146.39
  6. Step 6: Final answer
    x = 129,046.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.