Home / 105,155.52-145,115.35-57,409.97

Finding the Fourth Proportional to 105,155.52, 145,115.35 and 57,409.97

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Solution

The fourth proportional to 105,155.52, 145,115.35 and 57,409.97 is: 79,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.52 : 145,115.35 = 57,409.97 : x
  2. Step 2: Convert to fraction form
    105,155.52/145,115.35 = 57,409.97/x
  3. Step 3: Cross multiply
    105,155.52x = 145,115.35 × 57,409.97
  4. Step 4: Simplify right side
    105,155.52x = 8,331,067,020.94
  5. Step 5: Solve for x
    x = 8,331,067,020.94/105,155.52
  6. Step 6: Final answer
    x = 79,226.15

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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.