Home / 135,435.12-186,838.41-87,703.84

Finding the Fourth Proportional to 135,435.12, 186,838.41 and 87,703.84

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Solution

The fourth proportional to 135,435.12, 186,838.41 and 87,703.84 is: 120,991.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,435.12 : 186,838.41 = 87,703.84 : x
  2. Step 2: Convert to fraction form
    135,435.12/186,838.41 = 87,703.84/x
  3. Step 3: Cross multiply
    135,435.12x = 186,838.41 × 87,703.84
  4. Step 4: Simplify right side
    135,435.12x = 16,386,446,016.49
  5. Step 5: Solve for x
    x = 16,386,446,016.49/135,435.12
  6. Step 6: Final answer
    x = 120,991.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.