Home / 105,989.20-158,985.40-27,101.68

Finding the Fourth Proportional to 105,989.20, 158,985.40 and 27,101.68

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Solution

The fourth proportional to 105,989.20, 158,985.40 and 27,101.68 is: 40,652.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,989.20 : 158,985.40 = 27,101.68 : x
  2. Step 2: Convert to fraction form
    105,989.20/158,985.40 = 27,101.68/x
  3. Step 3: Cross multiply
    105,989.20x = 158,985.40 × 27,101.68
  4. Step 4: Simplify right side
    105,989.20x = 4,308,771,435.47
  5. Step 5: Solve for x
    x = 4,308,771,435.47/105,989.20
  6. Step 6: Final answer
    x = 40,652.93

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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.