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Finding the Fourth Proportional to 168,409.92, 232,303.68 and 100,381.56

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Solution

The fourth proportional to 168,409.92, 232,303.68 and 100,381.56 is: 138,465.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,409.92 : 232,303.68 = 100,381.56 : x
  2. Step 2: Convert to fraction form
    168,409.92/232,303.68 = 100,381.56/x
  3. Step 3: Cross multiply
    168,409.92x = 232,303.68 × 100,381.56
  4. Step 4: Simplify right side
    168,409.92x = 23,319,005,792.14
  5. Step 5: Solve for x
    x = 23,319,005,792.14/168,409.92
  6. Step 6: Final answer
    x = 138,465.75

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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.