Home / 135,010.35-186,337.03-78,454.53

Finding the Fourth Proportional to 135,010.35, 186,337.03 and 78,454.53

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Solution

The fourth proportional to 135,010.35, 186,337.03 and 78,454.53 is: 108,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,010.35 : 186,337.03 = 78,454.53 : x
  2. Step 2: Convert to fraction form
    135,010.35/186,337.03 = 78,454.53/x
  3. Step 3: Cross multiply
    135,010.35x = 186,337.03 × 78,454.53
  4. Step 4: Simplify right side
    135,010.35x = 14,618,984,772.22
  5. Step 5: Solve for x
    x = 14,618,984,772.22/135,010.35
  6. Step 6: Final answer
    x = 108,280.47

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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.