Home / 156,409.35-215,928.66-122,345.46

Finding the Fourth Proportional to 156,409.35, 215,928.66 and 122,345.46

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Solution

The fourth proportional to 156,409.35, 215,928.66 and 122,345.46 is: 168,902.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,409.35 : 215,928.66 = 122,345.46 : x
  2. Step 2: Convert to fraction form
    156,409.35/215,928.66 = 122,345.46/x
  3. Step 3: Cross multiply
    156,409.35x = 215,928.66 × 122,345.46
  4. Step 4: Simplify right side
    156,409.35x = 26,417,890,776.09
  5. Step 5: Solve for x
    x = 26,417,890,776.09/156,409.35
  6. Step 6: Final answer
    x = 168,902.24

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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.