Home / 140,122.70-193,313.78-86,314.40

Finding the Fourth Proportional to 140,122.70, 193,313.78 and 86,314.40

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Solution

The fourth proportional to 140,122.70, 193,313.78 and 86,314.40 is: 119,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,122.70 : 193,313.78 = 86,314.40 : x
  2. Step 2: Convert to fraction form
    140,122.70/193,313.78 = 86,314.40/x
  3. Step 3: Cross multiply
    140,122.70x = 193,313.78 × 86,314.40
  4. Step 4: Simplify right side
    140,122.70x = 16,685,762,932.43
  5. Step 5: Solve for x
    x = 16,685,762,932.43/140,122.70
  6. Step 6: Final answer
    x = 119,079.66

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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.