Home / 122,287.38-168,770.64-81,449.25

Finding the Fourth Proportional to 122,287.38, 168,770.64 and 81,449.25

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Solution

The fourth proportional to 122,287.38, 168,770.64 and 81,449.25 is: 112,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,287.38 : 168,770.64 = 81,449.25 : x
  2. Step 2: Convert to fraction form
    122,287.38/168,770.64 = 81,449.25/x
  3. Step 3: Cross multiply
    122,287.38x = 168,770.64 × 81,449.25
  4. Step 4: Simplify right side
    122,287.38x = 13,746,242,050.02
  5. Step 5: Solve for x
    x = 13,746,242,050.02/122,287.38
  6. Step 6: Final answer
    x = 112,409.33

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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.