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Finding the Fourth Proportional to 100,875.92, 151,113.40 and 92,609.06

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Solution

The fourth proportional to 100,875.92, 151,113.40 and 92,609.06 is: 138,729.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,875.92 : 151,113.40 = 92,609.06 : x
  2. Step 2: Convert to fraction form
    100,875.92/151,113.40 = 92,609.06/x
  3. Step 3: Cross multiply
    100,875.92x = 151,113.40 × 92,609.06
  4. Step 4: Simplify right side
    100,875.92x = 13,994,469,927.40
  5. Step 5: Solve for x
    x = 13,994,469,927.40/100,875.92
  6. Step 6: Final answer
    x = 138,729.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.