Home / 139,971.27-193,164.03-86,291.76

Finding the Fourth Proportional to 139,971.27, 193,164.03 and 86,291.76

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Solution

The fourth proportional to 139,971.27, 193,164.03 and 86,291.76 is: 119,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,971.27 : 193,164.03 = 86,291.76 : x
  2. Step 2: Convert to fraction form
    139,971.27/193,164.03 = 86,291.76/x
  3. Step 3: Cross multiply
    139,971.27x = 193,164.03 × 86,291.76
  4. Step 4: Simplify right side
    139,971.27x = 16,668,464,117.39
  5. Step 5: Solve for x
    x = 16,668,464,117.39/139,971.27
  6. Step 6: Final answer
    x = 119,084.90

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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.