Home / 115,032.83-172,800.81-81,965.39

Finding the Fourth Proportional to 115,032.83, 172,800.81 and 81,965.39

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Solution

The fourth proportional to 115,032.83, 172,800.81 and 81,965.39 is: 123,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,032.83 : 172,800.81 = 81,965.39 : x
  2. Step 2: Convert to fraction form
    115,032.83/172,800.81 = 81,965.39/x
  3. Step 3: Cross multiply
    115,032.83x = 172,800.81 × 81,965.39
  4. Step 4: Simplify right side
    115,032.83x = 14,163,684,919.96
  5. Step 5: Solve for x
    x = 14,163,684,919.96/115,032.83
  6. Step 6: Final answer
    x = 123,127.33

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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.