Home / 135,712.21-187,267.73-75,267.71

Finding the Fourth Proportional to 135,712.21, 187,267.73 and 75,267.71

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Solution

The fourth proportional to 135,712.21, 187,267.73 and 75,267.71 is: 103,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,712.21 : 187,267.73 = 75,267.71 : x
  2. Step 2: Convert to fraction form
    135,712.21/187,267.73 = 75,267.71/x
  3. Step 3: Cross multiply
    135,712.21x = 187,267.73 × 75,267.71
  4. Step 4: Simplify right side
    135,712.21x = 14,095,213,194.00
  5. Step 5: Solve for x
    x = 14,095,213,194.00/135,712.21
  6. Step 6: Final answer
    x = 103,861.05

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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.