Home / 134,974.25-186,264.48-78,389.27

Finding the Fourth Proportional to 134,974.25, 186,264.48 and 78,389.27

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Solution

The fourth proportional to 134,974.25, 186,264.48 and 78,389.27 is: 108,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,974.25 : 186,264.48 = 78,389.27 : x
  2. Step 2: Convert to fraction form
    134,974.25/186,264.48 = 78,389.27/x
  3. Step 3: Cross multiply
    134,974.25x = 186,264.48 × 78,389.27
  4. Step 4: Simplify right side
    134,974.25x = 14,601,136,614.13
  5. Step 5: Solve for x
    x = 14,601,136,614.13/134,974.25
  6. Step 6: Final answer
    x = 108,177.20

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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.