Home / 139,780.40-192,679.14-117,079.34

Finding the Fourth Proportional to 139,780.40, 192,679.14 and 117,079.34

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Solution

The fourth proportional to 139,780.40, 192,679.14 and 117,079.34 is: 161,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,780.40 : 192,679.14 = 117,079.34 : x
  2. Step 2: Convert to fraction form
    139,780.40/192,679.14 = 117,079.34/x
  3. Step 3: Cross multiply
    139,780.40x = 192,679.14 × 117,079.34
  4. Step 4: Simplify right side
    139,780.40x = 22,558,746,542.97
  5. Step 5: Solve for x
    x = 22,558,746,542.97/139,780.40
  6. Step 6: Final answer
    x = 161,387.05

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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.