Home / 134,578.72-185,711.16-74,137.48

Finding the Fourth Proportional to 134,578.72, 185,711.16 and 74,137.48

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Solution

The fourth proportional to 134,578.72, 185,711.16 and 74,137.48 is: 102,305.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,578.72 : 185,711.16 = 74,137.48 : x
  2. Step 2: Convert to fraction form
    134,578.72/185,711.16 = 74,137.48/x
  3. Step 3: Cross multiply
    134,578.72x = 185,711.16 × 74,137.48
  4. Step 4: Simplify right side
    134,578.72x = 13,768,157,410.28
  5. Step 5: Solve for x
    x = 13,768,157,410.28/134,578.72
  6. Step 6: Final answer
    x = 102,305.61

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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.