Home / 135,285.16-186,722.94-78,703.96

Finding the Fourth Proportional to 135,285.16, 186,722.94 and 78,703.96

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Solution

The fourth proportional to 135,285.16, 186,722.94 and 78,703.96 is: 108,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,285.16 : 186,722.94 = 78,703.96 : x
  2. Step 2: Convert to fraction form
    135,285.16/186,722.94 = 78,703.96/x
  3. Step 3: Cross multiply
    135,285.16x = 186,722.94 × 78,703.96
  4. Step 4: Simplify right side
    135,285.16x = 14,695,834,800.84
  5. Step 5: Solve for x
    x = 14,695,834,800.84/135,285.16
  6. Step 6: Final answer
    x = 108,628.58

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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.