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Finding the Fourth Proportional to 146,060.76, 201,563.70 and 78,992.76

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Solution

The fourth proportional to 146,060.76, 201,563.70 and 78,992.76 is: 109,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,060.76 : 201,563.70 = 78,992.76 : x
  2. Step 2: Convert to fraction form
    146,060.76/201,563.70 = 78,992.76/x
  3. Step 3: Cross multiply
    146,060.76x = 201,563.70 × 78,992.76
  4. Step 4: Simplify right side
    146,060.76x = 15,922,072,978.81
  5. Step 5: Solve for x
    x = 15,922,072,978.81/146,060.76
  6. Step 6: Final answer
    x = 109,009.93

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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.