Home / 105,255.10-145,251.79-57,508.81

Finding the Fourth Proportional to 105,255.10, 145,251.79 and 57,508.81

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Solution

The fourth proportional to 105,255.10, 145,251.79 and 57,508.81 is: 79,362.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.10 : 145,251.79 = 57,508.81 : x
  2. Step 2: Convert to fraction form
    105,255.10/145,251.79 = 57,508.81/x
  3. Step 3: Cross multiply
    105,255.10x = 145,251.79 × 57,508.81
  4. Step 4: Simplify right side
    105,255.10x = 8,353,257,086.37
  5. Step 5: Solve for x
    x = 8,353,257,086.37/105,255.10
  6. Step 6: Final answer
    x = 79,362.02

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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.