Home / 138,899.61-191,680.83-75,237.56

Finding the Fourth Proportional to 138,899.61, 191,680.83 and 75,237.56

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Solution

The fourth proportional to 138,899.61, 191,680.83 and 75,237.56 is: 103,827.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,899.61 : 191,680.83 = 75,237.56 : x
  2. Step 2: Convert to fraction form
    138,899.61/191,680.83 = 75,237.56/x
  3. Step 3: Cross multiply
    138,899.61x = 191,680.83 × 75,237.56
  4. Step 4: Simplify right side
    138,899.61x = 14,421,597,708.37
  5. Step 5: Solve for x
    x = 14,421,597,708.37/138,899.61
  6. Step 6: Final answer
    x = 103,827.49

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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.