Home / 134,561.25-185,694.53-78,005.43

Finding the Fourth Proportional to 134,561.25, 185,694.53 and 78,005.43

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Solution

The fourth proportional to 134,561.25, 185,694.53 and 78,005.43 is: 107,647.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,561.25 : 185,694.53 = 78,005.43 : x
  2. Step 2: Convert to fraction form
    134,561.25/185,694.53 = 78,005.43/x
  3. Step 3: Cross multiply
    134,561.25x = 185,694.53 × 78,005.43
  4. Step 4: Simplify right side
    134,561.25x = 14,485,181,271.27
  5. Step 5: Solve for x
    x = 14,485,181,271.27/134,561.25
  6. Step 6: Final answer
    x = 107,647.49

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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.