Home / 134,979.25-186,271.38-78,394.27

Finding the Fourth Proportional to 134,979.25, 186,271.38 and 78,394.27

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Solution

The fourth proportional to 134,979.25, 186,271.38 and 78,394.27 is: 108,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,979.25 : 186,271.38 = 78,394.27 : x
  2. Step 2: Convert to fraction form
    134,979.25/186,271.38 = 78,394.27/x
  3. Step 3: Cross multiply
    134,979.25x = 186,271.38 × 78,394.27
  4. Step 4: Simplify right side
    134,979.25x = 14,602,608,856.99
  5. Step 5: Solve for x
    x = 14,602,608,856.99/134,979.25
  6. Step 6: Final answer
    x = 108,184.10

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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.