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Finding the Fourth Proportional to 191,563.68, 264,338.96 and 106,688.64

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Solution

The fourth proportional to 191,563.68, 264,338.96 and 106,688.64 is: 147,219.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,563.68 : 264,338.96 = 106,688.64 : x
  2. Step 2: Convert to fraction form
    191,563.68/264,338.96 = 106,688.64/x
  3. Step 3: Cross multiply
    191,563.68x = 264,338.96 × 106,688.64
  4. Step 4: Simplify right side
    191,563.68x = 28,201,964,141.41
  5. Step 5: Solve for x
    x = 28,201,964,141.41/191,563.68
  6. Step 6: Final answer
    x = 147,219.79

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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.