Home / 134,974.75-186,265.17-78,389.77

Finding the Fourth Proportional to 134,974.75, 186,265.17 and 78,389.77

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Solution

The fourth proportional to 134,974.75, 186,265.17 and 78,389.77 is: 108,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,974.75 : 186,265.17 = 78,389.77 : x
  2. Step 2: Convert to fraction form
    134,974.75/186,265.17 = 78,389.77/x
  3. Step 3: Cross multiply
    134,974.75x = 186,265.17 × 78,389.77
  4. Step 4: Simplify right side
    134,974.75x = 14,601,283,835.31
  5. Step 5: Solve for x
    x = 14,601,283,835.31/134,974.75
  6. Step 6: Final answer
    x = 108,177.89

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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.