Home / 387,861.12-581,606.76-135,110.52

Finding the Fourth Proportional to 387,861.12, 581,606.76 and 135,110.52

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Solution

The fourth proportional to 387,861.12, 581,606.76 and 135,110.52 is: 202,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,861.12 : 581,606.76 = 135,110.52 : x
  2. Step 2: Convert to fraction form
    387,861.12/581,606.76 = 135,110.52/x
  3. Step 3: Cross multiply
    387,861.12x = 581,606.76 × 135,110.52
  4. Step 4: Simplify right side
    387,861.12x = 78,581,191,779.12
  5. Step 5: Solve for x
    x = 78,581,191,779.12/387,861.12
  6. Step 6: Final answer
    x = 202,601.36

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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.