Home / 124,734.23-172,139.48-76,321.01

Finding the Fourth Proportional to 124,734.23, 172,139.48 and 76,321.01

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Solution

The fourth proportional to 124,734.23, 172,139.48 and 76,321.01 is: 105,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,734.23 : 172,139.48 = 76,321.01 : x
  2. Step 2: Convert to fraction form
    124,734.23/172,139.48 = 76,321.01/x
  3. Step 3: Cross multiply
    124,734.23x = 172,139.48 × 76,321.01
  4. Step 4: Simplify right side
    124,734.23x = 13,137,857,732.17
  5. Step 5: Solve for x
    x = 13,137,857,732.17/124,734.23
  6. Step 6: Final answer
    x = 105,326.81

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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.