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Finding the Fourth Proportional to 135,803.76, 187,406.37 and 75,370.86

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Solution

The fourth proportional to 135,803.76, 187,406.37 and 75,370.86 is: 104,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,803.76 : 187,406.37 = 75,370.86 : x
  2. Step 2: Convert to fraction form
    135,803.76/187,406.37 = 75,370.86/x
  3. Step 3: Cross multiply
    135,803.76x = 187,406.37 × 75,370.86
  4. Step 4: Simplify right side
    135,803.76x = 14,124,979,276.38
  5. Step 5: Solve for x
    x = 14,124,979,276.38/135,803.76
  6. Step 6: Final answer
    x = 104,010.22

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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.