Home / 387,861.37-581,607.14-135,110.77

Finding the Fourth Proportional to 387,861.37, 581,607.14 and 135,110.77

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Solution

The fourth proportional to 387,861.37, 581,607.14 and 135,110.77 is: 202,601.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,861.37 : 581,607.14 = 135,110.77 : x
  2. Step 2: Convert to fraction form
    387,861.37/581,607.14 = 135,110.77/x
  3. Step 3: Cross multiply
    387,861.37x = 581,607.14 × 135,110.77
  4. Step 4: Simplify right side
    387,861.37x = 78,581,387,847.34
  5. Step 5: Solve for x
    x = 78,581,387,847.34/387,861.37
  6. Step 6: Final answer
    x = 202,601.74

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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.