Home / 105,619.68-145,755.24-63,188.28

Finding the Fourth Proportional to 105,619.68, 145,755.24 and 63,188.28

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Solution

The fourth proportional to 105,619.68, 145,755.24 and 63,188.28 is: 87,199.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.68 : 145,755.24 = 63,188.28 : x
  2. Step 2: Convert to fraction form
    105,619.68/145,755.24 = 63,188.28/x
  3. Step 3: Cross multiply
    105,619.68x = 145,755.24 × 63,188.28
  4. Step 4: Simplify right side
    105,619.68x = 9,210,022,916.59
  5. Step 5: Solve for x
    x = 9,210,022,916.59/105,619.68
  6. Step 6: Final answer
    x = 87,199.88

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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.