Home / 140,336.36-193,661.90-76,672.78

Finding the Fourth Proportional to 140,336.36, 193,661.90 and 76,672.78

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Solution

The fourth proportional to 140,336.36, 193,661.90 and 76,672.78 is: 105,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,336.36 : 193,661.90 = 76,672.78 : x
  2. Step 2: Convert to fraction form
    140,336.36/193,661.90 = 76,672.78/x
  3. Step 3: Cross multiply
    140,336.36x = 193,661.90 × 76,672.78
  4. Step 4: Simplify right side
    140,336.36x = 14,848,596,253.08
  5. Step 5: Solve for x
    x = 14,848,596,253.08/140,336.36
  6. Step 6: Final answer
    x = 105,807.19

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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.