Home / 128,996.20-193,235.10-73,527.40

Finding the Fourth Proportional to 128,996.20, 193,235.10 and 73,527.40

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Solution

The fourth proportional to 128,996.20, 193,235.10 and 73,527.40 is: 110,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,996.20 : 193,235.10 = 73,527.40 : x
  2. Step 2: Convert to fraction form
    128,996.20/193,235.10 = 73,527.40/x
  3. Step 3: Cross multiply
    128,996.20x = 193,235.10 × 73,527.40
  4. Step 4: Simplify right side
    128,996.20x = 14,208,074,491.74
  5. Step 5: Solve for x
    x = 14,208,074,491.74/128,996.20
  6. Step 6: Final answer
    x = 110,143.36

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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.