Home / 135,854.11-203,838.83-72,657.84

Finding the Fourth Proportional to 135,854.11, 203,838.83 and 72,657.84

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Solution

The fourth proportional to 135,854.11, 203,838.83 and 72,657.84 is: 109,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,854.11 : 203,838.83 = 72,657.84 : x
  2. Step 2: Convert to fraction form
    135,854.11/203,838.83 = 72,657.84/x
  3. Step 3: Cross multiply
    135,854.11x = 203,838.83 × 72,657.84
  4. Step 4: Simplify right side
    135,854.11x = 14,810,489,769.50
  5. Step 5: Solve for x
    x = 14,810,489,769.50/135,854.11
  6. Step 6: Final answer
    x = 109,017.60

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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.