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Finding the Fourth Proportional to 107,146.50, 147,795.48 and 68,955.90

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Solution

The fourth proportional to 107,146.50, 147,795.48 and 68,955.90 is: 95,116.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,146.50 : 147,795.48 = 68,955.90 : x
  2. Step 2: Convert to fraction form
    107,146.50/147,795.48 = 68,955.90/x
  3. Step 3: Cross multiply
    107,146.50x = 147,795.48 × 68,955.90
  4. Step 4: Simplify right side
    107,146.50x = 10,191,370,339.33
  5. Step 5: Solve for x
    x = 10,191,370,339.33/107,146.50
  6. Step 6: Final answer
    x = 95,116.22

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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.