Home / 109,421.40-164,153.70-49,419.84

Finding the Fourth Proportional to 109,421.40, 164,153.70 and 49,419.84

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Solution

The fourth proportional to 109,421.40, 164,153.70 and 49,419.84 is: 74,139.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,421.40 : 164,153.70 = 49,419.84 : x
  2. Step 2: Convert to fraction form
    109,421.40/164,153.70 = 49,419.84/x
  3. Step 3: Cross multiply
    109,421.40x = 164,153.70 × 49,419.84
  4. Step 4: Simplify right side
    109,421.40x = 8,112,449,589.41
  5. Step 5: Solve for x
    x = 8,112,449,589.41/109,421.40
  6. Step 6: Final answer
    x = 74,139.52

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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.