Home / 140,685.78-194,138.71-77,011.27

Finding the Fourth Proportional to 140,685.78, 194,138.71 and 77,011.27

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Solution

The fourth proportional to 140,685.78, 194,138.71 and 77,011.27 is: 106,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,685.78 : 194,138.71 = 77,011.27 : x
  2. Step 2: Convert to fraction form
    140,685.78/194,138.71 = 77,011.27/x
  3. Step 3: Cross multiply
    140,685.78x = 194,138.71 × 77,011.27
  4. Step 4: Simplify right side
    140,685.78x = 14,950,868,613.26
  5. Step 5: Solve for x
    x = 14,950,868,613.26/140,685.78
  6. Step 6: Final answer
    x = 106,271.36

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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.