Home / 140,137.11-193,393.89-76,478.40

Finding the Fourth Proportional to 140,137.11, 193,393.89 and 76,478.40

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Solution

The fourth proportional to 140,137.11, 193,393.89 and 76,478.40 is: 105,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,137.11 : 193,393.89 = 76,478.40 : x
  2. Step 2: Convert to fraction form
    140,137.11/193,393.89 = 76,478.40/x
  3. Step 3: Cross multiply
    140,137.11x = 193,393.89 × 76,478.40
  4. Step 4: Simplify right side
    140,137.11x = 14,790,455,276.98
  5. Step 5: Solve for x
    x = 14,790,455,276.98/140,137.11
  6. Step 6: Final answer
    x = 105,542.75

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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.