Home / 124,507.04-171,981.77-100,723.41

Finding the Fourth Proportional to 124,507.04, 171,981.77 and 100,723.41

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Solution

The fourth proportional to 124,507.04, 171,981.77 and 100,723.41 is: 139,129.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,507.04 : 171,981.77 = 100,723.41 : x
  2. Step 2: Convert to fraction form
    124,507.04/171,981.77 = 100,723.41/x
  3. Step 3: Cross multiply
    124,507.04x = 171,981.77 × 100,723.41
  4. Step 4: Simplify right side
    124,507.04x = 17,322,589,828.62
  5. Step 5: Solve for x
    x = 17,322,589,828.62/124,507.04
  6. Step 6: Final answer
    x = 139,129.41

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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.