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Finding the Fourth Proportional to 128,837.84, 193,254.84 and 44,659.28

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Solution

The fourth proportional to 128,837.84, 193,254.84 and 44,659.28 is: 66,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,837.84 : 193,254.84 = 44,659.28 : x
  2. Step 2: Convert to fraction form
    128,837.84/193,254.84 = 44,659.28/x
  3. Step 3: Cross multiply
    128,837.84x = 193,254.84 × 44,659.28
  4. Step 4: Simplify right side
    128,837.84x = 8,630,622,010.92
  5. Step 5: Solve for x
    x = 8,630,622,010.92/128,837.84
  6. Step 6: Final answer
    x = 66,988.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.