Home / 135,534.21-187,038.31-75,105.86

Finding the Fourth Proportional to 135,534.21, 187,038.31 and 75,105.86

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Solution

The fourth proportional to 135,534.21, 187,038.31 and 75,105.86 is: 103,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,534.21 : 187,038.31 = 75,105.86 : x
  2. Step 2: Convert to fraction form
    135,534.21/187,038.31 = 75,105.86/x
  3. Step 3: Cross multiply
    135,534.21x = 187,038.31 × 75,105.86
  4. Step 4: Simplify right side
    135,534.21x = 14,047,672,749.97
  5. Step 5: Solve for x
    x = 14,047,672,749.97/135,534.21
  6. Step 6: Final answer
    x = 103,646.70

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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.