Home / 134,974.13-186,264.31-78,389.15

Finding the Fourth Proportional to 134,974.13, 186,264.31 and 78,389.15

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Solution

The fourth proportional to 134,974.13, 186,264.31 and 78,389.15 is: 108,177.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,974.13 : 186,264.31 = 78,389.15 : x
  2. Step 2: Convert to fraction form
    134,974.13/186,264.31 = 78,389.15/x
  3. Step 3: Cross multiply
    134,974.13x = 186,264.31 × 78,389.15
  4. Step 4: Simplify right side
    134,974.13x = 14,601,099,808.94
  5. Step 5: Solve for x
    x = 14,601,099,808.94/134,974.13
  6. Step 6: Final answer
    x = 108,177.03

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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.