Home / 105,558.36-145,665.36-57,811.92

Finding the Fourth Proportional to 105,558.36, 145,665.36 and 57,811.92

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Solution

The fourth proportional to 105,558.36, 145,665.36 and 57,811.92 is: 79,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,558.36 : 145,665.36 = 57,811.92 : x
  2. Step 2: Convert to fraction form
    105,558.36/145,665.36 = 57,811.92/x
  3. Step 3: Cross multiply
    105,558.36x = 145,665.36 × 57,811.92
  4. Step 4: Simplify right side
    105,558.36x = 8,421,194,139.09
  5. Step 5: Solve for x
    x = 8,421,194,139.09/105,558.36
  6. Step 6: Final answer
    x = 79,777.61

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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.