Home / 128,723.60-177,619.44-73,528.88

Finding the Fourth Proportional to 128,723.60, 177,619.44 and 73,528.88

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Solution

The fourth proportional to 128,723.60, 177,619.44 and 73,528.88 is: 101,458.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,723.60 : 177,619.44 = 73,528.88 : x
  2. Step 2: Convert to fraction form
    128,723.60/177,619.44 = 73,528.88/x
  3. Step 3: Cross multiply
    128,723.60x = 177,619.44 × 73,528.88
  4. Step 4: Simplify right side
    128,723.60x = 13,060,158,489.43
  5. Step 5: Solve for x
    x = 13,060,158,489.43/128,723.60
  6. Step 6: Final answer
    x = 101,458.93

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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.