Home / 124,738.17-172,089.81-76,908.48

Finding the Fourth Proportional to 124,738.17, 172,089.81 and 76,908.48

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Solution

The fourth proportional to 124,738.17, 172,089.81 and 76,908.48 is: 106,103.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,738.17 : 172,089.81 = 76,908.48 : x
  2. Step 2: Convert to fraction form
    124,738.17/172,089.81 = 76,908.48/x
  3. Step 3: Cross multiply
    124,738.17x = 172,089.81 × 76,908.48
  4. Step 4: Simplify right side
    124,738.17x = 13,235,165,710.59
  5. Step 5: Solve for x
    x = 13,235,165,710.59/124,738.17
  6. Step 6: Final answer
    x = 106,103.57

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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.