Home / 135,565.39-203,390.59-81,588.96

Finding the Fourth Proportional to 135,565.39, 203,390.59 and 81,588.96

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Solution

The fourth proportional to 135,565.39, 203,390.59 and 81,588.96 is: 122,409.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,565.39 : 203,390.59 = 81,588.96 : x
  2. Step 2: Convert to fraction form
    135,565.39/203,390.59 = 81,588.96/x
  3. Step 3: Cross multiply
    135,565.39x = 203,390.59 × 81,588.96
  4. Step 4: Simplify right side
    135,565.39x = 16,594,426,711.89
  5. Step 5: Solve for x
    x = 16,594,426,711.89/135,565.39
  6. Step 6: Final answer
    x = 122,409.02

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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.