Home / 124,726.77-172,120.41-68,138.55

Finding the Fourth Proportional to 124,726.77, 172,120.41 and 68,138.55

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Solution

The fourth proportional to 124,726.77, 172,120.41 and 68,138.55 is: 94,029.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,726.77 : 172,120.41 = 68,138.55 : x
  2. Step 2: Convert to fraction form
    124,726.77/172,120.41 = 68,138.55/x
  3. Step 3: Cross multiply
    124,726.77x = 172,120.41 × 68,138.55
  4. Step 4: Simplify right side
    124,726.77x = 11,728,035,162.81
  5. Step 5: Solve for x
    x = 11,728,035,162.81/124,726.77
  6. Step 6: Final answer
    x = 94,029.82

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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.