Home / 105,163.36-145,156.50-73,342.51

Finding the Fourth Proportional to 105,163.36, 145,156.50 and 73,342.51

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Solution

The fourth proportional to 105,163.36, 145,156.50 and 73,342.51 is: 101,234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,163.36 : 145,156.50 = 73,342.51 : x
  2. Step 2: Convert to fraction form
    105,163.36/145,156.50 = 73,342.51/x
  3. Step 3: Cross multiply
    105,163.36x = 145,156.50 × 73,342.51
  4. Step 4: Simplify right side
    105,163.36x = 10,646,141,689.92
  5. Step 5: Solve for x
    x = 10,646,141,689.92/105,163.36
  6. Step 6: Final answer
    x = 101,234.33

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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.