Home / 136,147.39-204,007.71-86,121.81

Finding the Fourth Proportional to 136,147.39, 204,007.71 and 86,121.81

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Solution

The fourth proportional to 136,147.39, 204,007.71 and 86,121.81 is: 129,047.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,147.39 : 204,007.71 = 86,121.81 : x
  2. Step 2: Convert to fraction form
    136,147.39/204,007.71 = 86,121.81/x
  3. Step 3: Cross multiply
    136,147.39x = 204,007.71 × 86,121.81
  4. Step 4: Simplify right side
    136,147.39x = 17,569,513,239.16
  5. Step 5: Solve for x
    x = 17,569,513,239.16/136,147.39
  6. Step 6: Final answer
    x = 129,047.74

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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.