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Finding the Fourth Proportional to 168,399.06, 232,420.15 and 100,420.08

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Solution

The fourth proportional to 168,399.06, 232,420.15 and 100,420.08 is: 138,597.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,399.06 : 232,420.15 = 100,420.08 : x
  2. Step 2: Convert to fraction form
    168,399.06/232,420.15 = 100,420.08/x
  3. Step 3: Cross multiply
    168,399.06x = 232,420.15 × 100,420.08
  4. Step 4: Simplify right side
    168,399.06x = 23,339,650,056.61
  5. Step 5: Solve for x
    x = 23,339,650,056.61/168,399.06
  6. Step 6: Final answer
    x = 138,597.27

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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.