Home / 115,138.22-172,730.61-48,578.51

Finding the Fourth Proportional to 115,138.22, 172,730.61 and 48,578.51

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Solution

The fourth proportional to 115,138.22, 172,730.61 and 48,578.51 is: 72,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,138.22 : 172,730.61 = 48,578.51 : x
  2. Step 2: Convert to fraction form
    115,138.22/172,730.61 = 48,578.51/x
  3. Step 3: Cross multiply
    115,138.22x = 172,730.61 × 48,578.51
  4. Step 4: Simplify right side
    115,138.22x = 8,390,995,665.19
  5. Step 5: Solve for x
    x = 8,390,995,665.19/115,138.22
  6. Step 6: Final answer
    x = 72,877.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.