Home / 134,972.25-186,261.72-78,387.27

Finding the Fourth Proportional to 134,972.25, 186,261.72 and 78,387.27

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Solution

The fourth proportional to 134,972.25, 186,261.72 and 78,387.27 is: 108,174.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,972.25 : 186,261.72 = 78,387.27 : x
  2. Step 2: Convert to fraction form
    134,972.25/186,261.72 = 78,387.27/x
  3. Step 3: Cross multiply
    134,972.25x = 186,261.72 × 78,387.27
  4. Step 4: Simplify right side
    134,972.25x = 14,600,547,736.30
  5. Step 5: Solve for x
    x = 14,600,547,736.30/134,972.25
  6. Step 6: Final answer
    x = 108,174.44

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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.