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Finding the Fourth Proportional to 134,873.76, 186,125.76 and 75,257.76

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Solution

The fourth proportional to 134,873.76, 186,125.76 and 75,257.76 is: 103,855.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,873.76 : 186,125.76 = 75,257.76 : x
  2. Step 2: Convert to fraction form
    134,873.76/186,125.76 = 75,257.76/x
  3. Step 3: Cross multiply
    134,873.76x = 186,125.76 × 75,257.76
  4. Step 4: Simplify right side
    134,873.76x = 14,007,407,775.90
  5. Step 5: Solve for x
    x = 14,007,407,775.90/134,873.76
  6. Step 6: Final answer
    x = 103,855.69

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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.