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Finding the Fourth Proportional to 101,688.64, 152,461.80 and 73,243.96

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Solution

The fourth proportional to 101,688.64, 152,461.80 and 73,243.96 is: 109,814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,688.64 : 152,461.80 = 73,243.96 : x
  2. Step 2: Convert to fraction form
    101,688.64/152,461.80 = 73,243.96/x
  3. Step 3: Cross multiply
    101,688.64x = 152,461.80 × 73,243.96
  4. Step 4: Simplify right side
    101,688.64x = 11,166,905,980.73
  5. Step 5: Solve for x
    x = 11,166,905,980.73/101,688.64
  6. Step 6: Final answer
    x = 109,814.69

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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.