Home / 135,929.68-204,019.05-72,821.05

Finding the Fourth Proportional to 135,929.68, 204,019.05 and 72,821.05

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Solution

The fourth proportional to 135,929.68, 204,019.05 and 72,821.05 is: 109,298.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,929.68 : 204,019.05 = 72,821.05 : x
  2. Step 2: Convert to fraction form
    135,929.68/204,019.05 = 72,821.05/x
  3. Step 3: Cross multiply
    135,929.68x = 204,019.05 × 72,821.05
  4. Step 4: Simplify right side
    135,929.68x = 14,856,881,441.00
  5. Step 5: Solve for x
    x = 14,856,881,441.00/135,929.68
  6. Step 6: Final answer
    x = 109,298.29

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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.