Home / 124,508.54-171,983.84-100,724.91

Finding the Fourth Proportional to 124,508.54, 171,983.84 and 100,724.91

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Solution

The fourth proportional to 124,508.54, 171,983.84 and 100,724.91 is: 139,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,508.54 : 171,983.84 = 100,724.91 : x
  2. Step 2: Convert to fraction form
    124,508.54/171,983.84 = 100,724.91/x
  3. Step 3: Cross multiply
    124,508.54x = 171,983.84 × 100,724.91
  4. Step 4: Simplify right side
    124,508.54x = 17,323,056,805.45
  5. Step 5: Solve for x
    x = 17,323,056,805.45/124,508.54
  6. Step 6: Final answer
    x = 139,131.47

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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.