Home / 107,457.76-161,186.32-28,571.92

Finding the Fourth Proportional to 107,457.76, 161,186.32 and 28,571.92

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Solution

The fourth proportional to 107,457.76, 161,186.32 and 28,571.92 is: 42,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,457.76 : 161,186.32 = 28,571.92 : x
  2. Step 2: Convert to fraction form
    107,457.76/161,186.32 = 28,571.92/x
  3. Step 3: Cross multiply
    107,457.76x = 161,186.32 × 28,571.92
  4. Step 4: Simplify right side
    107,457.76x = 4,605,402,640.13
  5. Step 5: Solve for x
    x = 4,605,402,640.13/107,457.76
  6. Step 6: Final answer
    x = 42,857.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.