Home / 105,721.93-145,898.27-57,972.43

Finding the Fourth Proportional to 105,721.93, 145,898.27 and 57,972.43

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Solution

The fourth proportional to 105,721.93, 145,898.27 and 57,972.43 is: 80,003.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.93 : 145,898.27 = 57,972.43 : x
  2. Step 2: Convert to fraction form
    105,721.93/145,898.27 = 57,972.43/x
  3. Step 3: Cross multiply
    105,721.93x = 145,898.27 × 57,972.43
  4. Step 4: Simplify right side
    105,721.93x = 8,458,077,244.70
  5. Step 5: Solve for x
    x = 8,458,077,244.70/105,721.93
  6. Step 6: Final answer
    x = 80,003.05

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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.