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Finding the Fourth Proportional to 140,580.80, 193,998.48 and 76,918.40

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Solution

The fourth proportional to 140,580.80, 193,998.48 and 76,918.40 is: 106,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,580.80 : 193,998.48 = 76,918.40 : x
  2. Step 2: Convert to fraction form
    140,580.80/193,998.48 = 76,918.40/x
  3. Step 3: Cross multiply
    140,580.80x = 193,998.48 × 76,918.40
  4. Step 4: Simplify right side
    140,580.80x = 14,922,052,684.03
  5. Step 5: Solve for x
    x = 14,922,052,684.03/140,580.80
  6. Step 6: Final answer
    x = 106,145.74

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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.