Home / 105,720.48-158,716.03-90,822.91

Finding the Fourth Proportional to 105,720.48, 158,716.03 and 90,822.91

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Solution

The fourth proportional to 105,720.48, 158,716.03 and 90,822.91 is: 136,350.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720.48 : 158,716.03 = 90,822.91 : x
  2. Step 2: Convert to fraction form
    105,720.48/158,716.03 = 90,822.91/x
  3. Step 3: Cross multiply
    105,720.48x = 158,716.03 × 90,822.91
  4. Step 4: Simplify right side
    105,720.48x = 14,415,051,708.25
  5. Step 5: Solve for x
    x = 14,415,051,708.25/105,720.48
  6. Step 6: Final answer
    x = 136,350.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.