Home / 121,286.36-180,980.93-108,678.11

Finding the Fourth Proportional to 121,286.36, 180,980.93 and 108,678.11

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Solution

The fourth proportional to 121,286.36, 180,980.93 and 108,678.11 is: 162,167.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,286.36 : 180,980.93 = 108,678.11 : x
  2. Step 2: Convert to fraction form
    121,286.36/180,980.93 = 108,678.11/x
  3. Step 3: Cross multiply
    121,286.36x = 180,980.93 × 108,678.11
  4. Step 4: Simplify right side
    121,286.36x = 19,668,664,785.23
  5. Step 5: Solve for x
    x = 19,668,664,785.23/121,286.36
  6. Step 6: Final answer
    x = 162,167.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.