Home / 124,733.73-172,138.79-76,320.51

Finding the Fourth Proportional to 124,733.73, 172,138.79 and 76,320.51

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Solution

The fourth proportional to 124,733.73, 172,138.79 and 76,320.51 is: 105,326.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,733.73 : 172,138.79 = 76,320.51 : x
  2. Step 2: Convert to fraction form
    124,733.73/172,138.79 = 76,320.51/x
  3. Step 3: Cross multiply
    124,733.73x = 172,138.79 × 76,320.51
  4. Step 4: Simplify right side
    124,733.73x = 13,137,720,243.58
  5. Step 5: Solve for x
    x = 13,137,720,243.58/124,733.73
  6. Step 6: Final answer
    x = 105,326.12

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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.