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Finding the Fourth Proportional to 223,157.12, 307,963.92 and 122,555.12

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Solution

The fourth proportional to 223,157.12, 307,963.92 and 122,555.12 is: 169,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,157.12 : 307,963.92 = 122,555.12 : x
  2. Step 2: Convert to fraction form
    223,157.12/307,963.92 = 122,555.12/x
  3. Step 3: Cross multiply
    223,157.12x = 307,963.92 × 122,555.12
  4. Step 4: Simplify right side
    223,157.12x = 37,742,555,171.27
  5. Step 5: Solve for x
    x = 37,742,555,171.27/223,157.12
  6. Step 6: Final answer
    x = 169,129.96

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1.5x scale

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.