Home / 122,688.29-169,438.91-109,314.86

Finding the Fourth Proportional to 122,688.29, 169,438.91 and 109,314.86

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Solution

The fourth proportional to 122,688.29, 169,438.91 and 109,314.86 is: 150,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,688.29 : 169,438.91 = 109,314.86 : x
  2. Step 2: Convert to fraction form
    122,688.29/169,438.91 = 109,314.86/x
  3. Step 3: Cross multiply
    122,688.29x = 169,438.91 × 109,314.86
  4. Step 4: Simplify right side
    122,688.29x = 18,522,189,331.43
  5. Step 5: Solve for x
    x = 18,522,189,331.43/122,688.29
  6. Step 6: Final answer
    x = 150,969.50

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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.